They are primarily a northern species that inhabits boreal forests and can also range as far north as the shores of the Arctic Ocean ... These animals are nimble and fast, which is fortunate ...

That ratio could shift in the coming years, though. Here are the 15 extinct ocean animals (that we know of), along with a dozen others that are on the verge of extinction.

Pink and bulbous "sea pigs", hand-sized sea spiders and delicate sea butterflies are among the bizarre animals hauled up from the ocean floor by a team of Australian researchers aboard the ...