Endangered Ocean Species: A Crisis in the Seas

One million species face extinction, and marine life is hit hardest. Vaquita: fewer than 10 remain, the rarest marine mammal. North Atlantic right whale: fewer than 350.

Hawksbill turtle: population declined 80%. Oceanic whitetip shark: declined 93%. Coral reefs: 50% lost since 1950.

Pacific bluefin tuna: at 3% of historic levels. Chinese pangolin (wait, wrong list). Causes: overfishing, habitat destruction, pollution, climate change, and ocean acidification. By 2050, oceans could contain more plastic than fish by weight. Protected marine areas cover only 7% of the ocean..