Fish

In this undated photo provided by the Massachusetts Division of Marine Fisheries, a winter skate rests among seagrass at a monitoring site in the sound off shore from Salem, Mass. Seagrass meadows, found in coastlines all coastal areas around the world except Antarctica's shores, are among the most poorly protected but widespread coastal habitats in the world. Studies have found more than 70 species of seagrass that can reduce erosion and improve water quality, while providing food and shelter for sea creatures. (Tay Evans/Massachusetts Division of Marine Fisheries via AP)

Swedish environmental activist Greta Thunberg attends a climate strike arranged by the organization "Fridays For Future" outside the Swedish parliament Riksdagen in Stockholm, Friday Dec. 20, 2019. (Pontus Lundahl/TT via AP)

This Sept. 19, 2018 photo shows the last standing building above the Yellow Pine Pit open-pit gold mine in the Stibnite Mining District in central Idaho, where a company hopes to start mining again. Documents show the Trump administration intervening in a U.S. Forest Service decision so that a Canadian company could write a key environmental report on its proposed open-pit gold mines in central Idaho. (Riley Bunch/Idaho Press-Tribune via AP)

In this Wednesday, Dec. 4, 2019, photo, sightseers plays on a sandbar in the Mekong River in Nakhon Phanom province, northeastern Thailand. Experts say the aquamarine color the Mekong River has recently acquired may beguile tourists but it also indicates a problem caused by upstream dams. The water usually is a yellowish-brown shade due to the sediment it normally carries downstream. But lately it has been running clear, taking on a blue-green hue that is a reflection of the sky. The water levels have also become unusually low, exposing sandbanks in the middle of the river. (AP Photo/Chessadaporn Buasai)

In this undated photo provided by the Tennessee Aquarium, an electric ell named Miguel Wattson lights up a Christmas tree at the Tennessee Aquarium in Chattanooga, Tenn. The aquarium says a system connected to Miguel's tank enables his shocks to power strands of lights on the nearby tree. (Thom Benson/Tennessee Aquarium via AP)

In this Nov. 14, 2019, photo provided by John Guillote and taken from an aerial drone shows the U.S. research vessel Sikuliaq as it makes its way through sea ice in the Beaufort Sea off Alaska's north coast. University of Washington scientists onboard the research vessel are studying the changes and how less sea ice will affect coastlines, which already are vulnerable to erosion because increased waves delivered by storms. More erosion would increase the chance of winter flooding in villages and danger to hunters in small boats. (John Guillote via AP)

FILE - In this June 13, 2012, file photo, Asian carp, jolted by an electric current from a research boat, jump from the Illinois River near Havana, Ill. Sport fish have declined significantly in portions of the Upper Mississippi River infested with Asian carp, apparently confirming fears about the invaders' threat to native species, according to a newly released study. Analysis of more than 20 years of population data suggests the carp are out-competing fish prized by anglers, such as yellow perch, bluegill, and black and white crappie, the report said. (AP Photo/John Flesher, File)

FILE - In this Saturday, April 13, 2019 file photo, Seychelles President Danny Faure sits inside a submersible on the deck of vessel Ocean Zephyr, off the coast of Desroches, in the outer islands of Seychelles. Faure warns there's no time for the "blame Game" in the fight against climate change and urges major nations to do more adding that the small island nations, like his, are the least responsible for the problem but the most in danger as sea levels rise (AP Photo/Steve Barker, file)

CORRECTS THE SOURCE - In this photo provided by RACQ CQ Rescue, a helicopter and ambulances used in the rescue of two tourists attacked by a shark are parked on a sporting ground, near Airlie Beach, Australia. A shark bit off a British tourist's foot and mauled another British tourist's leg as the men snorkeled on Australia's Great Barrier Reef, officials said. (RACQ CQ Rescue via AP)