A general view shows a rainbow in a flooded area, over the border between Israel and Egypt, near the Israeli southern village of Beer Milka, Israel March 13, 2020 REUTERS/ Amir Cohen

A car is seen during a thunderstorm and heavy rains in downtown of Cairo, as the government announced a day off while the rain exceeds the infrastructure's capacity in most cities, in Egypt March 12, 2020. REUTERS/Mohamed Abd El Ghany

A man views flooded properties beside the River Severn in Ironbridge, Britain, February 27, 2020. REUTERS/Toby Melville

A tree is seen partially submerged in water after a riverbank collapsed in Ta Dar U village, Bago, Myanmar, February 5, 2020. Photo taken on February 5, 2020. REUTERS/Ann Wang

Demolished part of Hasankeyf village and a wall constructed as part of the Ilisu Dam project are seen in southeastern Batman province, Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer

A bridge over the Tigris River which connects Hasankeyf to the other side of the river is seen nearly submerged by the waters of Ilisu Dam in Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer

An old cemetery is seen in Hasankeyf, which will be significantly submerged by the Ilisu Dam, with new Hasankeyf in the background in southeastern Batman province, Turkey, February 20, 2020. Picture taken February 20, 2020. REUTERS/Murad Sezer

An old pillbox stands half-submerged in sand in front of oyster farms in Yunlin, Taiwan, January 6, 2020. REUTERS/Ann Wang SEARCH "TAIWAN BUNKER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Cattle killed by the bushfires are buried in Cobargo, New South Wales, Australia January 5, 2020. REUTERS/Tracey Nearmy TPX IMAGES OF THE DAY

A swan paddles on Loch Faskally, Pitlochry, Scotland, Britain October 26, 2019. REUTERS/Russell Cheyne

A Pillar coral (Dendrogyra cylindricus) showing a small amount of tissue loss caused by Stony Coral Tissue Loss Disease (SCTLD) stands near the University of the Virgin Islands campus in St Thomas in the U.S. Virgin Islands, May 17, 2019. REUTERS/Lucas Jackson

Fatima, a two-year-old hippopotamus rescued from a circus, swims at the zoo in Managua, Nicaragua September 12, 2019. REUTERS/Oswaldo Rivas

Fatima, a two-year-old hippopotamus rescued from a circus, opens its mouth at the zoo in Managua, Nicaragua September 12, 2019. REUTERS/Oswaldo Rivas

Fatima, a two-year-old hippopotamus rescued from a circus, swims at the zoo in Managua, Nicaragua September 12, 2019. REUTERS/Oswaldo Rivas

Fatima, a two-year-old hippopotamus rescued from a circus, is fed at the zoo in Managua, Nicaragua September 12, 2019. REUTERS/Oswaldo Rivas

Fatima, a two-year-old hippopotamus rescued from a circus, shakes its head at the zoo in Managua, Nicaragua September 12, 2019. REUTERS/Oswaldo Rivas

A man paddles in the waters of the Ionian Sea near Sidari settlement on the island of Corfu, Greece July 26, 2019. REUTERS/Vasily Fedosenko

Large crocodiles are seen in the Tarcoles River, a river with one of the highest crocodile population in the world, in Tarcoles, province of Puntarenas, Costa Rica, July 16, 2019. REUTERS/Juan Carlos Ulate

A large crocodile is seen in the Tarcoles River, a river with one of the highest crocodile population in the world, in Tarcoles, province of Puntarenas, Costa Rica, July 16, 2019. REUTERS/Juan Carlos Ulate

A large crocodile eats a chicken given by Juan Cerdas, whose hobby is feeding them at the Tarcoles River, a river with one of the highest crocodile population in the world, in Tarcoles, province of Puntarenas, Costa Rica, July 16, 2019. REUTERS/Juan Carlos Ulate

A large crocodile is seen in the Tarcoles River, a river with one of the highest crocodile population in the world, in Tarcoles, province of Puntarenas, Costa Rica, July 16, 2019. REUTERS/Juan Carlos Ulate

A large crocodile is seen in the Tarcoles River, a river with one of the highest crocodile population in the world, in Tarcoles, province of Puntarenas, Costa Rica, July 16, 2019. REUTERS/Juan Carlos Ulate

A baby hippo stands in water near its mother Mona at Dvur Kralove Zoo, Czech Republic, June 12, 2019. Picture taken June 12, 2019. REUTERS/David W Cerny

A baby hippo stands in water at Dvur Kralove Zoo, Czech Republic, June 12, 2019. Picture taken June 12, 2019. REUTERS/David W Cerny

A baby hippo swims in a pond at Dvur Kralove Zoo, Czech Republic, June 12, 2019. Picture taken June 12, 2019. REUTERS/David W Cerny

A baby hippo swims in a pond near its mother Mona at Dvur Kralove Zoo, Czech Republic, June 12, 2019. Picture taken June 12, 2019. REUTERS/David W Cerny

Volunteers walk past a sunken plastic boat during in the Zero Plastiko Urdaibai ocean and coastal cleanup near Bermeo, Spain June 8, 2019. 2500 volunteers and 300 divers helped clean up the stretch of Basque coastline, according to organizers, as part of World Oceans Day. REUTERS/Vincent West

An image of the sunken boat "Mermaid" is seen during a news conference in Budapest, Hungary, June 3, 2019. REUTERS/Fedja Grulovic

Coral trout are seen inside Apollo Aquaculture Group's three-tiered vertical fish farm in northern Singapore, May 4, 2019. REUTERS/Loriene Perera

Vessels are washed up next to houses after a tsunami hit, in Anyer, Banten province, Indonesia December 25, 2018. REUTERS/Jorge Silva TPX IMAGES OF THE DAY

A sunken vessel is pictured after a tsunami hit Anyer in Banten province, Indonesia December 25, 2018. REUTERS/Jorge Silva

A boy wearing Santa Claus outfit watches a large fish tank at Sunshine Aquarium in Tokyo, Japan, December 18, 2018. REUTERS/Issei Kato

Hamish the polar bear emerges from his frozen muddy pond searching for his red ball in the Highland Wildlife Park in Kincraig, Scotland, Britain, December 16, 2018. REUTERS/Russell Cheyne

Hamish the polar bear plays in a frozen muddy pond in the Highland Wildlife Park in Kincraig, Scotland, Britain, December 16, 2018. REUTERS/Russell Cheyne

Hamish the polar bear plays in a frozen muddy pond in the Highland Wildlife Park in Kincraig, Scotland, Britain, December 16, 2018. REUTERS/Russell Cheyne

An excavator is partially submerged in a stream as civil defense members look for missing persons after rain storms unleashed flash floods, in Madaba city, near Amman, Jordan, November 10, 2018. REUTERS/Muhammad Hamed

People watch civil defense members as they look for missing persons after rain storms unleashed flash floods, in Madaba city, near Amman, Jordan, November 10, 2018. REUTERS/Muhammad Hamed

A moon jellyfish is seen at the Aquarium Pula, Croatia, July 25, 2018. Housed in a more than 130-year-old fort in Croatia, Aquarium Pula boasts species from the Adriatic as well as tropical marine zones and freshwater habitats. From seahorses delicately entwining themselves in the seagrass to the other-worldly jelly fish drifting in the deep blue water, the aquarium is home to around 250 species in 100 pools and tanks and attracts some 125,000 visitors a year. Picture taken July 25, 2018. REUTERS/Antonio Bronic

A starfish is seen at Aquarium Pula, Croatia, July 25, 2018. Housed in a more than 130-year-old fort in Croatia, Aquarium Pula boasts species from the Adriatic as well as tropical marine zones and freshwater habitats. From seahorses delicately entwining themselves in the seagrass to the other-worldly jelly fish drifting in the deep blue water, the aquarium is home to around 250 species in 100 pools and tanks and attracts some 125,000 visitors a year. Picture taken July 25, 2018. REUTERS/Antonio Bronic

Street lights partially submerged are seen along the Po river in Turin, Italy, November 6, 2018. REUTERS/Massimo Pinca

A damaged car is seen in the aftermath of the flooding of the Milicia river in Casteldaccia, near Palermo, Italy, November 4, 2018. REUTERS/Guglielmo Mangiapane

General view of the a house after the river Milicia flooded in Casteldaccia near Palermo, Italy, November 4, 2018. REUTERS/Guglielmo Mangiapane

Fish swim in the sea of Sidon, Lebanon November 2, 2018. REUTERS/Ali Hashisho

A destroyed car is seen at the bottom of the sea off the beach of Legrena, near Athens, Greece, October 21, 2018. Picture taken October 21, 2018. REUTERS/Stelios Misinas

A destroyed car is seen at the bottom of the sea off the beach of Legrena, near Athens, Greece, October 21, 2018. Picture taken October 21, 2018. REUTERS/Stelios Misinas

A destroyed engine is seen at the bottom of the sea off the beach of Legrena, near Athens, Greece, October 21, 2018. Picture taken October 21, 2018. REUTERS/Stelios Misinas

A destroyed car is seen at the bottom of the sea off the beach of Legrena, near Athens, Greece, October 21, 2018. Picture taken October 21, 2018. REUTERS/Stelios Misinas

A destroyed car is seen at the bottom of the sea off the beach of Legrena, near Athens, Greece, October 21, 2018. Picture taken October 21, 2018. REUTERS/Stelios Misinas

The Arab Baths monument is seen flooded after heavy rain and flash floods hit Ronda, southern Spain, October 21, 2018. REUTERS/Jon Nazca

A flooded field is seen after heavy rain and flash floods hit Campillos, southern Spain, October 21, 2018. REUTERS/Jon Nazca

A flooded field is seen after heavy rain and flash floods hit Campillos, southern Spain, October 21, 2018. REUTERS/Jon Nazca

A bird egg is seen on a street after a heavy rain and flash floods hit Campillos, southern Spain, October 21, 2018. REUTERS/Jon Nazca

A dead rat lies on a street after a heavy rain and flash floods hit Campillos, southern Spain, October 21, 2018. REUTERS/Jon Nazca

A dead bird lies on a street after a heavy rain and flash floods hit Campillos, southern Spain, October 21, 2018. REUTERS/Jon Nazca

A man shows a dead bird after a heavy rain and flash floods hit Campillos, southern Spain, October 21, 2018. REUTERS/Jon Nazca

A dead bird lies on a street after a heavy rain and flash floods hit Campillos, southern Spain, October 21, 2018. REUTERS/Jon Nazca

A flood level mark is seen inside a house after heavy rain and flash floods hit Campillos, southern Spain, October 21, 2018. REUTERS/Jon Nazca

A flood level mark is seen as mud stains the entrance of a house after heavy rain and flash floods hit Campillos, southern Spain, October 21, 2018. REUTERS/Jon Nazca

A car is seen in a hole with water at Balaroa neighborhood hit by the earthquake and liquefaction in Palu, Central Sulawesi, Indonesia, October 9, 2018. Picture taken October 9, 2018. REUTERS/Jorge Silva