Thousands of dead fish wash up along boat slips at the Marina Del Rey, Calif., May 19, 2014.
Nick Ut/AP Photo
The deadly parasitic Varroa mite sits on the back of a honey bee in this undated handout photo; nearly one out of four American honeybee colonies died this winter, under siege from parasites, disease, pesticide use, nutrition problems and a mysterious sudden die-off.
Scott Bauer/Agriculture Department/AP Photo
The bodies of puffins lie washed up on a beach in Sainte-Marie-de-Re, France, after heavy storms, Feb. 10, 2014.
Xavier Leoty/AFP/Getty Images
Tons of dead fish float on the waters of the Rodrigo de Freitas lagoon beside the Corcovado mountain in Rio de Janeiro, Brazil, March 13, 2013.
Christophe Simon/AFP/Getty Images
People salvage dead fish in Wuhan, China, Sept. 3, 2013; about 40 kilometers of Fuhe River was covered with dead fish, reportedly caused by excessive ammonia nitrogen density.
Nearly 10 tons of dead fish float on Ismarida Lake near the town of Komotini, Greece, Sept. 5, 2013, where experts found there was a lack of oxygen in some parts of the body of water.
Sakis Mitrolidis/AFP/Getty Images
Dead elk lie near Mora, N.M., Aug. 27, 2013, where the deaths of more than 100 elk in northeastern New Mexico were likely caused by drinking water that contained toxic algae.
New Mexico Department Game and Fish/AP Photo
Dead fish litter the beach in Belmar N.J., May 16, 2014; the fish died due to what state environmental officials believe were depleted oxygen levels in the Shark River.
Wayne Parry/AP Photo
Malnourished sea lion pups recover at the Marine Mammal Care Center at Fort MacArthur in San Pedro, Calif., April 9, 2013.
Joe Klamar/AFP/Getty Images
Manatee rehab team members hold down a rescued manatee during treatment at the David A. Straz Jr. Manatee Hospital at Tampa, Florida's Lowry Park Zoo, March 13, 2013.
Virginia Aquarium Stranding Response Team members record observations of a deceased male dolphin on Ocean View Beach in Norfolk, Va., Aug. 1, 2013.
Dorothy Edwards/The Virginian-Pilot/AP Photo
A worker with U.S. Environmental Services, a private contractor, picks up a dead bird in Beebe, Ark. Jan. 1, 2011 as more can be seen on the street behind him. The Arkansas Game and Fish Commission said Saturday more than 1,000 dead black birds fell from the sky in Beebe.
Warren Watkins/The Daily Citizen/AP Photo
Municipal workers pull out dead fish from the waters at Rodrigo de Freitas lagoon in Rio de Janeiro, Brazil, early on Feb. 27, 2010. The death of the hordes of fish could be the result of an abrupt temperature change, or possibly due to pollution, experts says. Thirty tons of dead fish were removed from the waters.
Antonio Scorza/AFP/Getty Images
Sea Gulls feed amongst tens of thousands of dead Sea Urchins washed up on Malibu beach, which is closed to swimmers after recent rains caused the water to be contaminated, in Malibu on Oct. 9, 2010.
Mark Ralson/AFP/Getty Images