10 Animals Our Children Will Never See

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Caribbean monk seal: Extinct in 2008

caribbean-monk-sealCaptive Caribbean monk seal. Image: New York Zoological Society

Caribbean monk seals once freely roamed the Caribbean, but humans eliminated their only food source and hunted every last one of them for oil.

This seal, which grew to 8 feet in length and weighed between 375 and 600 pounds, was closely related to Hawaiian and Mediterranean monk seals, both of which are critically endangered.