Workers take advantage of the ocean's low tide to make repairs to a brake wall at Cardiff State Beach in Encinitas, California, U.S., March 1, 2023. REUTERS/Mike Blake 

Workers take advantage of the ocean's low tide to make repairs to a brake wall at Cardiff State Beach in Encinitas, California, U.S., March 1, 2023. REUTERS/Mike Blake 

A group of eight juvenile blacktip reef sharks swim in the early morning, during low tide, in the shallow waters used as a nursery, in Maya Bay at the Phi Phi Island National Park, on Phi Phi Leh Island, Krabi province, Thailand, February 27, 2023. Blacktips, named after the distinctive black colouring on their dorsal fins and tails, roam the Andaman Sea and other tropical regions in decreasing numbers due to overfishing, according to the International Union for Conservation of Nature. REUTERS/Jorge Silva SEARCH "SILVA THAILAND SHARKS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY 

Members of the Maya Shark Watch Project team walk during low tide in Maya Bay at the Phi Phi Island National Park, on Phi Phi Leh Island, Krabi province, Thailand February 24, 2023. The Maya Shark Watch Project use underwater cameras and drones to count sharks and observe their behaviour, feeding areas, and breeding patterns. In the year between November 2021, when they initiated a pilot study, and the end of 2022, they noticed a decrease in the number of sharks as tourists gradually returned to Maya Bay. REUTERS/Jorge Silva SEARCH "SILVA THAILAND SHARKS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A gondola is pictured in a canal during a severe low tide in the lagoon city of Venice, Italy, February 17, 2023. REUTERS/Manuel Silvestri REFILE - CORRECTING YEAR 

Tourists take pictures during a severe low tide in the lagoon city of Venice, Italy, February 17, 2023. REUTERS/Manuel Silvestri REFILE - CORRECTING YEAR 

A gondolier rows his gondola during a severe low tide in the lagoon city of Venice, Italy, February 17, 2023. REUTERS/Manuel Silvestri REFILE - CORRECTING YEAR 

A fire boat and a gondola pass by a canal during a severe low tide in the lagoon city of Venice, Italy, February 17, 2023. REUTERS/Manuel Silvestri REFILE - CORRECTING YEAR 

Boats are pictured in a canal during a severe low tide in the lagoon city of Venice, Italy, February 17, 2023. REUTERS/Manuel Silvestri REFILE - CORRECTING YEAR 

Boats are pictured in a canal during a severe low tide in the lagoon city of Venice, Italy, February 17, 2023. REUTERS/Manuel Silvestri REFILE - CORRECTING YEAR 

Gondolas are pictured in the Grand Canal during a severe low tide in the lagoon city of Venice, Italy, February 17, 2023. REUTERS/Manuel Silvestri REFILE - CORRECTING YEAR 

Gondolas are pictured in the Grand Canal during a severe low tide in the lagoon city of Venice, Italy, February 17, 2023. REUTERS/Manuel Silvestri REFILE - CORRECTING YEAR 

Gondolas are pictured in the Grand Canal during a severe low tide in the lagoon city of Venice, Italy, February 17, 2023. REUTERS/Manuel Silvestri REFILE - CORRECTING YEAR 

Boats are pictured in a canal during a severe low tide in the lagoon city of Venice, Italy, February 17, 2023. REUTERS/Manuel Silvestri REFILE - CORRECTING YEAR 

A man walks across sands at low tide on the beach, in Dungeness, Britain, December 10, 2022. REUTERS/Peter Nicholls 

A man rides his bike along the sand during low tide at Cardiff State Beach in Encinitas, California, U.S., December 8, 2022. REUTERS/Mike Blake 

People enjoy low tide during sunset in Solana Beach, California, U.S., December 8, 2022. REUTERS/Mike Blake 

Tourists visit Praia das Catedrais (Cathedrals' beach) at low tide, which is the set of rock arches sculpted by the strength of the Cantabrian Sea, in Ribadeo, northern Galicia, Spain September 25, 2022. REUTERS/Nacho Doce 

Tourists visit Praia das Catedrais (Cathedrals' beach) at low tide, which is the set of rock arches sculpted by the strength of the Cantabrian Sea, in Ribadeo, northern Galicia, Spain September 25, 2022. REUTERS/Nacho Doce 

Tourists visit Praia das Catedrais (Cathedrals' beach) at low tide, which is the set of rock arches sculpted by the strength of the Cantabrian Sea, in Ribadeo, northern Galicia, Spain September 25, 2022. REUTERS/Nacho Doce 

Tourists visit Praia das Catedrais (Cathedrals' beach) at low tide, which is the set of rock arches sculpted by the strength of the Cantabrian Sea, in Ribadeo, northern Galicia, Spain September 25, 2022. REUTERS/Nacho Doce 

Tourists visit Praia das Catedrais (Cathedrals' beach) at low tide, which is the set of rock arches sculpted by the strength of the Cantabrian Sea, in Ribadeo, northern Galicia, Spain September 25, 2022. REUTERS/Nacho Doce 

Tourists visit Praia das Catedrais (Cathedrals' beach) at low tide, which is the set of rock arches sculpted by the strength of the Cantabrian Sea, in Ribadeo, northern Galicia, Spain September 25, 2022. REUTERS/Nacho Doce 

A tourist gestures with an umbrella as she visits Praia das Catedrais (Cathedrals' beach) at low tide, which is the set of rock arches sculpted by the strength of the Cantabrian Sea, in Ribadeo, northern Galicia, Spain September 25, 2022. REUTERS/Nacho Doce 

Tourists visit Praia das Catedrais (Cathedrals' beach) at low tide, which is the set of rock arches sculpted by the strength of the Cantabrian Sea, in Ribadeo, northern Galicia, Spain September 25, 2022. REUTERS/Nacho Doce 

Tourists visit Praia das Catedrais (Cathedrals' beach) at low tide, which is the set of rock arches sculpted by the strength of the Cantabrian Sea, in Ribadeo, northern Galicia, Spain September 25, 2022. REUTERS/Nacho Doce 

People walk to the edge of River Thames at low tide, as the queue for the vigil is seen behind, following the death of Britain's Queen Elizabeth, in London, Britain, September 17, 2022. REUTERS/Toby Melville 

Mohammad Ibrahim, 48, rows towards his floating farm in Pirojpur district, Bangladesh, August 17, 2022. Bangladesh could lose more than a tenth of its land to sea level rise in two decades, with climate change bringing more extreme heat and rainfall, flooding, erosion and saltwater surges in low-lying southern and southwestern delta, criss-crossed by hundreds of rivers. "I can feel the harsh weather. Water levels are rising. I still can remember I used to play football in the land that now goes under the water during the normal tide,? Ibrahim said. REUTERS/Mohammad Ponir Hossain SEARCH "HOSSAIN FLOATING FARMS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Mohammad Ibrahim, 48, plants gourd seedlings on his floating bed, at his farm in Pirojpur district, Bangladesh, August 17, 2022. Bangladesh could lose more than a tenth of its land to sea level rise in two decades, with climate change bringing more extreme heat and rainfall, flooding, erosion and saltwater surges in low-lying southern and southwestern delta, criss-crossed by hundreds of rivers. "I can feel the harsh weather. Water levels are rising. I still can remember I used to play football in the land that now goes under the water during the normal tide,? Ibrahim said. REUTERS/Mohammad Ponir Hossain SEARCH "HOSSAIN FLOATING FARMS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Mohammad Ibrahim, 48, eats betel leaves during a break from work, at a local shop in Pirojpur district, Bangladesh, August 17, 2022. Bangladesh could lose more than a tenth of its land to sea level rise in two decades, with climate change bringing more extreme heat and rainfall, flooding, erosion and saltwater surges in low-lying southern and southwestern delta, criss-crossed by hundreds of rivers. "I can feel the harsh weather. Water levels are rising. I still can remember I used to play football in the land that now goes under the water during the normal tide,? Ibrahim said. REUTERS/Mohammad Ponir Hossain SEARCH "HOSSAIN FLOATING FARMS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Local fishermen prepare fishing nets before heading out to sea at sunrise at a beach in Mannar, Sri Lanka, August 17, 2022. REUTERS/Joseph Campbell 

A group of local fishermen attempt to clean an empty fishing net that has just been pulled to shore in Mannar, Sri Lanka, August 17, 2022. REUTERS/Joseph Campbell 

A group of local fishermen head out to sea in their boat just off the shore of Mannar, Sri Lanka, August 17, 2022. REUTERS/Joseph Campbell 

A couple walks on sand flats at low tide in Cape Cod Bay, at Chapin Memorial Beach in Dennis, Massachusetts, U.S., August 17, 2022. REUTERS/Mike Segar 

A woman walks on sand flats at low tide in Cape Cod Bay, at Chapin Memorial Beach in Dennis, Massachusetts, U.S., August 17, 2022. REUTERS/Mike Segar 

Mohammad Ibrahim, 48, irrigates his floating bed, at his farm in Pirojpur district, Bangladesh, August 16, 2022. Bangladesh could lose more than a tenth of its land to sea level rise in two decades, with climate change bringing more extreme heat and rainfall, flooding, erosion and saltwater surges in low-lying southern and southwestern delta, criss-crossed by hundreds of rivers. "I can feel the harsh weather. Water levels are rising. I still can remember I used to play football in the land that now goes under the water during the normal tide,? Ibrahim said. REUTERS/Mohammad Ponir Hossain SEARCH "HOSSAIN FLOATING FARMS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY 

Mohammad Ibrahim, 48, talks on the phone at his floating farm, in Pirojpur district, Bangladesh, August 16, 2022. Bangladesh could lose more than a tenth of its land to sea level rise in two decades, with climate change bringing more extreme heat and rainfall, flooding, erosion and saltwater surges in low-lying southern and southwestern delta, criss-crossed by hundreds of rivers. "I can feel the harsh weather. Water levels are rising. I still can remember I used to play football in the land that now goes under the water during the normal tide,? Ibrahim said. REUTERS/Mohammad Ponir Hossain SEARCH "HOSSAIN FLOATING FARMS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A group of local fishermen play cards on a beach just outside a port in Mannar, August 16, 2022. REUTERS/Joseph Campbell 

A pile of fish is seen on a fishing boat just after returning to shore in Mannar, Sri Lanka, August 16, 2022. REUTERS/Joseph Campbell 

Fishing boats are seen docked at a local port at sunset in Mannar, Sri Lanka, August 16, 2022. REUTERS/Joseph Campbell 

A local fisherman scales and cleans a fish at evening in Mannar, Sri Lanka, August 16, 2022. REUTERS/Joseph Campbell 

Local fishermen sort through piles of freshly caught fish in a fishing boat just after returning to shore in Mannar, Sri Lanka, August 16, 2022. REUTERS/Joseph Campbell 

A local fisherman holds a bucket of freshly caught fish just after returning to shore in Mannar, Sri Lanka, August 16, 2022. REUTERS/Joseph Campbell 

Local fisherman Ebert Rajeevan (right) and a colleague haul a bucket of freshly caught fish from a fishing boat to the shore in Mannar, Sri Lanka, August 16, 2022. REUTERS/Joseph Campbell 

Exterior of a dimly-lit fishing trader’s union branch is seen at evening in Mannar, Sri Lanka, August 16, 2022. REUTERS/Joseph Campbell 

A local fisherman collects dried fish carcasses near a port in Mannar, Sri Lanka, August 16, 2022. REUTERS/Joseph Campbell 

A rusted shopping cart is seen on a sandbank in the Rhine exposed by the low tide in Bonn, Germany, August 16, 2022. REUTERS/Benjamin Westhoff 

A rusted shopping cart is seen on a sandbank in the Rhine exposed by the low tide in Bonn, Germany, August 16, 2022. REUTERS/Benjamin Westhoff TPX IMAGES OF THE DAY 

A rusted shopping cart is seen on a sandbank in the Rhine exposed by the low tide in Bonn, Germany, August 16, 2022. REUTERS/Benjamin Westhoff 

A rusted shopping cart is seen on a sandbank in the Rhine exposed by the low tide in Bonn, Germany, August 16, 2022. REUTERS/Benjamin Westhoff 

A rusted shopping cart is seen on a sandbank in the Rhine exposed by the low tide in Bonn, Germany, August 16, 2022. REUTERS/Benjamin Westhoff 

Mohammad Ibrahim, 48, collects gourd seedlings from a floating bed to be sold to middlemen, at his farm in Pirojpur district, Bangladesh, August 15, 2022. Bangladesh could lose more than a tenth of its land to sea level rise in two decades, with climate change bringing more extreme heat and rainfall, flooding, erosion and saltwater surges in low-lying southern and southwestern delta, criss-crossed by hundreds of rivers. "I can feel the harsh weather. Water levels are rising. I still can remember I used to play football in the land that now goes under the water during the normal tide,? Ibrahim said. REUTERS/Mohammad Ponir Hossain SEARCH "HOSSAIN FLOATING FARMS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Mohammad Ibrahim, 48, carries gourd seedlings to be sold to middlemen, at his floating farm in Pirojpur district, Bangladesh, August 15, 2022. Bangladesh could lose more than a tenth of its land to sea level rise in two decades, with climate change bringing more extreme heat and rainfall, flooding, erosion and saltwater surges in low-lying southern and southwestern delta, criss-crossed by hundreds of rivers. "I can feel the harsh weather. Water levels are rising. I still can remember I used to play football in the land that now goes under the water during the normal tide,? Ibrahim said. REUTERS/Mohammad Ponir Hossain SEARCH "HOSSAIN FLOATING FARMS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Mohammad Ibrahim, 48, sells his gourd seedlings to a middleman in Pirojpur district, Bangladesh, August 15, 2022. Bangladesh could lose more than a tenth of its land to sea level rise in two decades, with climate change bringing more extreme heat and rainfall, flooding, erosion and saltwater surges in low-lying southern and southwestern delta, criss-crossed by hundreds of rivers. "I can feel the harsh weather. Water levels are rising. I still can remember I used to play football in the land that now goes under the water during the normal tide,? Ibrahim said. REUTERS/Mohammad Ponir Hossain SEARCH "HOSSAIN FLOATING FARMS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

People take to a beach by the river Thames at low tide in London, Britain, July 16, 2022. REUTERS/Peter Nicholls 

People take to a beach by the river Thames at low tide in London, Britain, July 16, 2022. REUTERS/Peter Nicholls 

People take to a beach by the river Thames at low tide in London, Britain, July 16, 2022. REUTERS/Peter Nicholls 

Two men walk along a beach by the river Thames at low tide in London, Britain, July 16, 2022. REUTERS/Peter Nicholls 

People walk along a beach by the river Thames at low tide in London, Britain, July 16, 2022. REUTERS/Peter Nicholls 

A man waves to people on a boat from a beach by the river Thames at low tide in London, Britain, July 16, 2022. REUTERS/Peter Nicholls