One of two rescued endangered olive ridley turtles arrives at Sea World's animal rescue center after being flown from the Oregon coast by the U.S. Coast Guard to San Diego, California March 30, 2016. (REUTERS/Mike Blake)<br>
Killer whales perform during a press visit at the Marineland Zoo in Antibes before its reopening, six months after the flooding that affected the French Riviera in October 2015, in Antibes, France, March 17, 2016. (REUTERS/Eric Gaillard)
A Steller sea lion eats fish during a press visit at the Marineland Zoo in Antibes before its reopening, six months after the flooding that affected the French Riviera in October 2015, in Antibes, France, March 17, 2016. (REUTERS/Eric Gaillard)<br>
An otter swims in a river in the 30 km (19 miles) exclusion zone around the Chernobyl nuclear reactor in the abandoned village of Pogonnoe, Belarus, March 13, 2016. (REUTERS/Vasily Fedosenko)
'Debbie', a 56-day-old dolphin baby is seen from underwater as she swims next to her mother 'Delphi' at the zoo in Duisburg, Germany February 17, 2016. 'Debbie' was born on Christmas Eve. (REUTERS/Wolfgang Rattay)