For the last sixty years or so, scientists have been puzzled how to classify the xenoturbella, a mysterious sea creature which resembles a purple sock. The xenoturbella has no brains, guts or even eyes. It only has a gaping mouth that allows it to take in food and release waste. Scientists have now identified the species, rather farther down on the “tree of life” than they had expected.

This Strange Sea Creature Looks Like A ‘Purple Sock‘