Pregnant sea otter dies, leaving only 5 in captivity in Japan

A pregnant sea otter died recently at a southwestern Japan aquarium, leaving only five individuals of the endangered species alive in captivity in the country.At 9 years old, the sea otter named Mana died Monday at Marine World Uminonakamichi in Fukuoka after her uterus ruptured, according to her keeper.Mana was raised with her male companion Riro and they were believed to be the only pair living at a Japanese facility likely to produce offspring.Sea otter numbers crashed due to excessive fur hunting in the 18th and 19th centuries and have been classified as endangered on the Red List of Th…READ FULL ARTICLE