An octopus is seen at the bottom of the sea off the island of Sifnos, Greece, August 14, 2018. Picture taken August 14, 2018. REUTERS/Stelios Misinas 

A shoal of fish is seen off the island of Salamina, Greece, August 23, 2018. Picture taken August 23, 2018. REUTERS/Stelios Misinas 

A wheel is seen at the bottom of the sea off the island of Sifnos, Greece, August 18, 2018. Picture taken August 18, 2018. REUTERS/Stelios Misinas 

A glass bottle is seen at the bottom of the sea off the island of Sifnos, Greece, August 18, 2018. Picture taken August 18, 2018. REUTERS/Stelios Misinas 

A fish swims by an anchor at the bottom of the sea off the island of Sifnos, Greece, August 16, 2018. Picture taken August 16, 2018. REUTERS/Stelios Misinas 

A tin container is seen at the bottom of the sea off the island of Thasos, Greece, August 29, 2018. Picture taken August 29, 2018. REUTERS/Stelios Misinas 

A wheel is seen at the bottom of the sea off the island of Thasos, Greece, August 29, 2018. Picture taken August 29, 2018. REUTERS/Stelios Misinas 

Two chairs are seen at the bottom of the sea off the island of Thasos, Greece, August 29, 2018. Picture taken August 29, 2018. REUTERS/Stelios Misinas 

An arrow-head discovered in 2006 by Archaeologists of the University of Cambridge Archaeological Unit, is displayed by one of the team uncovering Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls TPX IMAGES OF THE DAY 

A piece of timber from a house, unearthed by archaeologists is displayed by a member of the University of Cambridge Archaeological Unit, who are uncovering Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

A clay pot discovered in 2006 by Archaeologists of the University of Cambridge Archaeological Unit, is displayed while they uncover Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

An archaeologists from the University of Cambridge Archaeological Unit, places a piece of timber, from an uncovered Bronze Age house, and preserved in silt, into a water pool at a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

An archaeologist from the University of Cambridge Archaeological Unit, uncovers Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

A clay pot is unearthed by archaeologists from the University of Cambridge Archaeological Unit, who are currently uncovering Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

Archaeologists from the University of Cambridge Archaeological Unit, uncover Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

Archaeologists from the University of Cambridge Archaeological Unit, uncover Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

An archaeologist from the University of Cambridge Archaeological Unit, uncovers Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

An archaeologist from the University of Cambridge Archaeological Unit, uncovers Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

An archaeologist from the University of Cambridge Archaeological Unit, uncovers Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

Archaeologists from the University of Cambridge Archaeological Unit, uncover Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

An archaeologist from the University of Cambridge Archaeological Unit, arranges sample bags filled with earth, during the excavation of Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

An archaeologist from the University of Cambridge Archaeological Unit, shovels earth while uncovering Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

An archaeologists from the University of Cambridge Archaeological Unit, places a piece of timber, from an uncovered Bronze Age house, and preserved in silt, into a water pool at a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

An archaeologists from the University of Cambridge Archaeological Unit, places a piece of timber, from an uncovered Bronze Age house, and preserved in silt, into a water pool at a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

Archaeologists from the University of Cambridge Archaeological Unit, uncover Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

Archaeologists from the University of Cambridge Archaeological Unit, uncover Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

Archaeologists from the University of Cambridge Archaeological Unit, uncover Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

Archaeologists from the University of Cambridge Archaeological Unit, uncover Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

Archaeologists from the University of Cambridge Archaeological Unit, uncover Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

Archaeologists from the University of Cambridge Archaeological Unit, uncover Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

Archaeologists from the University of Cambridge Archaeological Unit, uncover Bronze Age wooden houses, preserved in silt, from a quarry near Peterborough, Britain, January 12, 2016. Archaeologists said on Tuesday they had discovered what were believed to be the best-preserved Bronze Age dwellings ever found in Britain, providing an extraordinary insight into prehistoric life from 3,000 years ago. The settlement of large circular wooden houses, built on stilts, collapsed in a fire and plunged into a river where it was preserved in silts leaving them in pristine condition, Historic England said. REUTERS/Peter Nicholls 

A man clears silt outside a home after flooding in the town of Mytholmroyd, northern England, December 27, 2015. REUTERS/Andrew Yates 

Men clear silt outside a home after flooding in the town of Mytholmroyd, northern England, December 27, 2015. REUTERS/Andrew Yates 

Workers clear mud and silt from the road after the river burst it's banks and flooded the village of Glenridding in North West England, December 10, 2015. REUTERS/Phil Noble 

A view of the turbid waters of the Nile, which is caused by silt from the flooding of the river, in Cairo March 21, 2014. Ahead of World Water Day, which falls on March 22 and aims to raise global awareness of water usage and conservation, Egypt fears that a $4.7 billion dam that Ethiopia is building on one of the main tributaries of the Nile will reduce a water supply vital for its 84 million people, who mostly live in the river's valley and delta. REUTERS/Amr Abdallah Dalsh (EGYPT - Tags: ENVIRONMENT) 

Boats are seen in the turbid waters of the Nile, which is caused by silt from the flooding of the river, in Cairo March 21, 2014. Ahead of World Water Day, which falls on March 22 and aims to raise global awareness of water usage and conservation, Egypt fears that a $4.7 billion dam that Ethiopia is building on one of the main tributaries of the Nile will reduce a water supply vital for its 84 million people, who mostly live in the river's valley and delta. REUTERS/Amr Abdallah Dalsh (EGYPT - Tags: ENVIRONMENT) 

A boat is seen in the turbid waters of the Nile, which is caused by silt from the flooding of the river, in Cairo March 21, 2014. Ahead of World Water Day, which falls on March 22 and aims to raise global awareness of water usage and conservation, Egypt fears that a $4.7 billion dam that Ethiopia is building on one of the main tributaries of the Nile will reduce a water supply vital for its 84 million people, who mostly live in the river's valley and delta. REUTERS/Amr Abdallah Dalsh (EGYPT - Tags: ENVIRONMENT) 

Labourers clean silt in a river as gulls fly over in Kunming, Yunnan province, December 2, 2013. REUTERS/Wong Campion (CHINA - Tags: SOCIETY ENVIRONMENT ANIMALS) 

John McElveen shovels silt and debris out of the path of the rising water as rain starts getting heavier in Boulder, Colorado September 15, 2013. REUTERS/Mark Leffingwell (UNITED STATES - Tags: DISASTER ENVIRONMENT) 

Footsteps of a homeowner are seen in mud and silt covering the floor of a living room in La Estancia, Diego Martin, some 10 km (6 miles) west of the capital Port of Spain August 11, 2012. According to local media, two people were confirmed dead when heavy rainfall over a four-hour period caused widespread damage in the western peninsula due to flooding and mudslides. REUTERS/Andrea De Silva (TRINIDAD AND TOBAGO - Tags: DISASTER ENVIRONMENT) 

The proprietor of a neighbourhood shop gets help to clear her store of mud and silt left behind when a nearby river burst its banks at La Horquette Road, Glencoe, about 10 km (6 miles) from the capital Port-of-Spain, August 11, 2012. According to local media, two people were confirmed dead when heavy rainfall over a four hour period caused widespread damage in the western peninsula due to flooding and mudslides. REUTERS/Andrea De Silva (TRINIDAD AND TOBAGO - Tags: DISASTER ENVIRONMENT) 

A man pans for gold on a rocky bank of the Irrawaddy River in Myanmar's northern Kachin State February 24, 2012. About 100 gold prospectors work along the river at this site on the outskirts of the state capital Myitkyina earning anywhere from $3-12 a day. There are no large nuggets of gold in the rocks and sand of the Irrawaddy. Rather, the prospectors laboriously sift and filter their way down to a fine black silt in which minute flecks of gold can sometimes be found. At the end of the day they process the silt with chemicals to remove the gold. A day's work yields an amount of gold roughly the size of a grain or two of rice. REUTERS/Stringer (MYANMAR - Tags: SOCIETY BUSINESS COMMODITIES) 

Boys play water as their parents pan for gold on a rocky bank of the Irrawaddy River in Myanmar's northern Kachin State February 24, 2012. About 100 gold prospectors work along the river at this site on the outskirts of the state capital Myitkyina earning anywhere from $3-12 a day. There are no large nuggets of gold in the rocks and sand of the Irrawaddy. Rather, the prospectors laboriously sift and filter their way down to a fine black silt in which minute flecks of gold can sometimes be found. At the end of the day they process the silt with chemicals to remove the gold. A day's work yields an amount of gold roughly the size of a grain or two of rice. REUTERS/Stringer (MYANMAR - Tags: SOCIETY BUSINESS COMMODITIES) 

People pan for gold on a rocky bank of the Irrawaddy River in Myanmar's northern Kachin State February 24, 2012. About 100 gold prospectors work along the river at this site on the outskirts of the state capital Myitkyina earning anywhere from $3-12 a day. About 100 gold prospectors work along the river at this site on the outskirts of the state capital Myitkyina earning anywhere from $3-12 a day. There are no large nuggets of gold in the rocks and sand of the Irrawaddy. Rather, the prospectors laboriously sift and filter their way down to a fine black silt in which minute flecks of gold can sometimes be found. At the end of the day they process the silt with chemicals to remove the gold. A day's work yields an amount of gold roughly the size of a grain or two of rice. REUTERS/Soe Zeya Tun (MYANMAR - Tags: SOCIETY BUSINESS COMMODITIES) 

A woman makes her way back home after she pans for gold on a rocky bank of the Irrawaddy River in Myanmar's northern Kachin State February 24, 2012. About 100 gold prospectors work along the river at this site on the outskirts of the state capital Myitkyina earning anywhere from $3-12 a day. There are no large nuggets of gold in the rocks and sand of the Irrawaddy. Rather, the prospectors laboriously sift and filter their way down to a fine black silt in which minute flecks of gold can sometimes be found. At the end of the day they process the silt with chemicals to remove the gold. A day's work yields an amount of gold roughly the size of a grain or two of rice. REUTERS/Soe Zeya Tun (MYANMAR - Tags: SOCIETY BUSINESS COMMODITIES) 

People make their way home after panning for gold on a rocky bank of the Irrawaddy River in Myanmar's northern Kachin State February 24, 2012. About 100 gold prospectors work along the river at this site on the outskirts of the state capital Myitkyina earning anywhere from $3-12 a day. There are no large nuggets of gold in the rocks and sand of the Irrawaddy. Rather, the prospectors laboriously sift and filter their way down to a fine black silt in which minute flecks of gold can sometimes be found. At the end of the day they process the silt with chemicals to remove the gold. A day's work yields an amount of gold roughly the size of a grain or two of rice. REUTERS/Soe Zeya Tun (MYANMAR - Tags: SOCIETY BUSINESS COMMODITIES) 

A woman pans for gold on a rocky bank of the Irrawaddy River in Myanmar's northern Kachin State February 24, 2012. About 100 gold prospectors work along the river at this site on the outskirts of the state capital Myitkyina earning anywhere from $3-12 a day. There are no large nuggets of gold in the rocks and sand of the Irrawaddy. Rather, the prospectors laboriously sift and filter their way down to a fine black silt in which minute flecks of gold can sometimes be found. At the end of the day they process the silt with chemicals to remove the gold. A day's work yields an amount of gold roughly the size of a grain or two of rice. REUTERS/Soe Zeya Tun (MYANMAR - Tags: SOCIETY BUSINESS COMMODITIES) 

A man pans for gold on a rocky bank of the Irrawaddy River in Myanmar's northern Kachin State February 24, 2012. About 100 gold prospectors work along the river at this site on the outskirts of the state capital Myitkyina earning anywhere from $3-12 a day. There are no large nuggets of gold in the rocks and sand of the Irrawaddy. Rather, the prospectors laboriously sift and filter their way down to a fine black silt in which minute flecks of gold can sometimes be found. At the end of the day they process the silt with chemicals to remove the gold. A day's work yields an amount of gold roughly the size of a grain or two of rice. REUTERS/Soe Zeya Tun (MYANMAR - Tags: SOCIETY BUSINESS COMMODITIES) 

People pan for gold on a rocky bank of the Irrawaddy River in Myanmar's northern Kachin State February 24, 2012. About 100 gold prospectors work along the river at this site on the outskirts of the state capital Myitkyina earning anywhere from $3-12 a day. There are no large nuggets of gold in the rocks and sand of the Irrawaddy. Rather, the prospectors laboriously sift and filter their way down to a fine black silt in which minute flecks of gold can sometimes be found. At the end of the day they process the silt with chemicals to remove the gold. A day's work yields an amount of gold roughly the size of a grain or two of rice. REUTERS/Soe Zeya Tun (MYANMAR - Tags: SOCIETY BUSINESS COMMODITIES) 

People pan for gold on a rocky bank of the Irrawaddy River in Myanmar's northern Kachin State February 24, 2012. About 100 gold prospectors work along the river at this site on the outskirts of the state capital Myitkyina earning anywhere from $3-12 a day. There are no large nuggets of gold in the rocks and sand of the Irrawaddy. Rather, the prospectors laboriously sift and filter their way down to a fine black silt in which minute flecks of gold can sometimes be found. At the end of the day they process the silt with chemicals to remove the gold. A day's work yields an amount of gold roughly the size of a grain or two of rice. REUTERS/Soe Zeya Tun (MYANMAR - Tags: SOCIETY BUSINESS COMMODITIES) 

A girl pans for gold on a rocky bank of the Irrawaddy River in Myanmar's northern Kachin State, February 24, 2012. About 100 gold prospectors work along the river at this site on the outskirts of the state capital Myitkyina earning anywhere from $3-12 a day. There are no large nuggets of gold in the rocks and sand of the Irrawaddy. Rather, the prospectors laboriously sift and filter their way down to a fine black silt in which minute flecks of gold can sometimes be found. At the end of the day they process the silt with chemicals to remove the gold. A day's work yields an amount of gold roughly the size of a grain or two of rice. REUTERS/Soe Zeya Tun (MYANMAR - Tags: SOCIETY BUSINESS COMMODITIES) 

A boy plays in the water as his parents pan for gold on a rocky bank of the Irrawaddy River in Myanmar's northern Kachin State, February 24, 2012. About 100 gold prospectors work along the river at this site on the outskirts of the state capital Myitkyina earning anywhere from $3-12 a day. There are no large nuggets of gold in the rocks and sand of the Irrawaddy. Rather, the prospectors laboriously sift and filter their way down to a fine black silt in which minute flecks of gold can sometimes be found. At the end of the day they process the silt with chemicals to remove the gold. A day's work yields an amount of gold roughly the size of a grain or two of rice.REUTERS/Soe Zeya Tun (MYANMAR - Tags: SOCIETY BUSINESS COMMODITIES) 

A motorcyclist passes mud and silt caused by liquefaction in Christchurch after an earthquake struck December 23, 2011. An earthquake of 5.8 magnitude struck near the New Zealand city of Christchurch on Friday, New Zealand's civil defence said, prompting the evacuation of some public buildings and sending goods toppling from shelves. REUTERS/Simon Baker (NEW ZEALAND - Tags: DISASTER ENVIRONMENT TRANSPORT) 

Jason Schein, Assistant Curator of Natural History, New Jersey State Museum, shows a fossil of the belly plate of an ancient sea turtle that was recently discovered at the site where Paleontologist Kenneth Lacovara is leading an Archaeological team digging for fossils of 65 million year-old marine creatures, in Sewell, New Jersey, June 29, 2011. The tooth is approximately 12mm long. New Jersey is the birthplace of dinosaur paleontology. But over the years, the numerous silt mines that made for great dinosaur digging were replaced with housing developments and strip malls. Scientists have been digging here for nearly a century, uncovering prehistoric sharks, crocodiles and even saber tooth herring. But the township of Mantua, a community of 15,000 people, has other plans for the site. Township officials would like to see the mine closed and a retail and lower cost housing development built in its place. Picture taken June 29, 2011. To match Feature BC-DINOSAURS-NEWJERSEY/ REUTERS/Tom Mihalek (UNITED STATES - Tags: ANIMALS SCI TECH SOCIETY) 

Jean Caton digs for fossils in a muddy pit at the site where Paleontologist Kenneth Lacovara is leading an Archaeological team digging for fossils of 65 million year-old marine creatures, in Sewell, New Jersey, June 29, 2011. The tooth is approximately 12mm long. New Jersey is the birthplace of dinosaur paleontology. But over the years, the numerous silt mines that made for great dinosaur digging were replaced with housing developments and strip malls. Scientists have been digging here for nearly a century, uncovering prehistoric sharks, crocodiles and even saber tooth herring. But the township of Mantua, a community of 15,000 people, has other plans for the site. Township officials would like to see the mine closed and a retail and lower cost housing development built in its place. Picture taken June 29, 2011. To match Feature BC-DINOSAURS-NEWJERSEY/ REUTERS/Tom Mihalek (UNITED STATES - Tags: ANIMALS SCI TECH SOCIETY) 

A shark's tooth and another fossil which were recovered from the site where Paleontologist Kenneth Lacovara is leading an Archaeological team digging for fossils of 65 million year-old marine creatures, in Sewell, New Jersey, June 29, 2011. The tooth is approximately 12mm long. New Jersey is the birthplace of dinosaur paleontology. But over the years, the numerous silt mines that made for great dinosaur digging were replaced with housing developments and strip malls. Scientists have been digging here for nearly a century, uncovering prehistoric sharks, crocodiles and even saber tooth herring. But the township of Mantua, a community of 15,000 people, has other plans for the site. Township officials would like to see the mine closed and a retail and lower cost housing development built in its place. Picture taken June 29, 2011. To match Feature BC-DINOSAURS-NEWJERSEY/ REUTERS/Tom Mihalek (UNITED STATES - Tags: ANIMALS SCI TECH SOCIETY) 

Paleontologist Kenneth Lacovara holds the fossilized jaw bones of an alligator recovered at the site where he is leading an Archaeological team digging for fossils of 65 million year-old marine creatures, in Sewell, New Jersey, June 29, 2011. New Jersey is the birthplace of dinosaur paleontology. But over the years, the numerous silt mines that made for great dinosaur digging were replaced with housing developments and strip malls. Scientists have been digging here for nearly a century, uncovering prehistoric sharks, crocodiles and even saber tooth herring. But the township of Mantua, a community of 15,000 people, has other plans for the site. Township officials would like to see the mine closed and a retail and lower cost housing development built in its place. Picture taken June 29, 2011. To match Feature BC-DINOSAURS-NEWJERSEY/ REUTERS/Tom Mihalek (UNITED STATES - Tags: ANIMALS SCI TECH SOCIETY) 

The fossilized remains of what could be a bone from an alligator rests on a log book at the site where Paleontologist Kenneth Lacovara is leading an Archaeological team digging for fossils of 65 million year-old marine creatures, in Sewell, New Jersey, June 29, 2011. New Jersey is the birthplace of dinosaur paleontology. But over the years, the numerous silt mines that made for great dinosaur digging were replaced with housing developments and strip malls. Scientists have been digging here for nearly a century, uncovering prehistoric sharks, crocodiles and even saber tooth herring. But the township of Mantua, a community of 15,000 people, has other plans for the site. Township officials would like to see the mine closed and a retail and lower cost housing development built in its place. Picture taken June 29, 2011. To match Feature BC-DINOSAURS-NEWJERSEY/ REUTERS/Tom Mihalek (UNITED STATES - Tags: ANIMALS SCI TECH SOCIETY) 

Volunteer Jim Smaling shovels sand at the site where Paleontologist Kenneth Lacovara is leading an Archaeological team digging for fossils of 65 million year-old marine creatures, in Sewell, New Jersey, June 29, 2011. New Jersey is the birthplace of dinosaur paleontology. But over the years, the numerous silt mines that made for great dinosaur digging were replaced with housing developments and strip malls. Scientists have been digging here for nearly a century, uncovering prehistoric sharks, crocodiles and even saber tooth herring. But the township of Mantua, a community of 15,000 people, has other plans for the site. Township officials would like to see the mine closed and a retail and lower cost housing development built in its place. Picture taken June 29, 2011. To match Feature BC-DINOSAURS-NEWJERSEY/ REUTERS/Tom Mihalek (UNITED STATES - Tags: ANIMALS SCI TECH SOCIETY) 

Volunteer Ron Staiger, a member of the Delaware Valley Paleontological Society, sifts sand looking for small fossils at the site where Paleontologist Kenneth Lacovara is leading an Archaeological team digging for fossils of 65 million year-old marine creatures, in Sewell, New Jersey, June 29, 2011. New Jersey is the birthplace of dinosaur paleontology. But over the years, the numerous silt mines that made for great dinosaur digging were replaced with housing developments and strip malls. Scientists have been digging here for nearly a century, uncovering prehistoric sharks, crocodiles and even saber tooth herring. But the township of Mantua, a community of 15,000 people, has other plans for the site. Township officials would like to see the mine closed and a retail and lower cost housing development built in its place. Picture taken June 29, 2011. To match Feature BC-DINOSAURS-NEWJERSEY/ REUTERS/Tom Mihalek (UNITED STATES - Tags: ANIMALS SCI TECH SOCIETY)