Osedax
(Osedax roseus)

Found on the seafloor across the world’s oceans, Osedax — also known as the bone worm — is a remarkable deep-sea creature that feeds exclusively on the bones of dead whales and other large animals.

 

It has no mouth or stomach, instead secreting acid through root-like structures that bore directly into the bone, while symbiotic bacteria living inside it break down the nutrients released for the worm to absorb!