Osedax: The Bone-Eating Worms

ocean · worms · weird eaters · deep sea

Bone-boring experts. Osedax worms have a name that means 'bone devourer' in Latin, and they live up to it by settling right on the bones of dead sea animals. They use special root-like tissues to squirt acid at the bone and slowly dissolve it.

Secret acid dissolvers. These worms don't munch bones like you'd chew food. Instead, they secrete acid through specialized roots to break down the bone's outer layers so they can reach the fatty, nutritious lipids hidden deep inside.

Ecosystem engineers. Osedax worms accidentally help other tiny creatures by making bones more complex and less solid, which creates new spaces for microfauna to move into and live. They're like accidental architects of the ocean floor.

Deep-sea home dwellers. These worms belong to a group called siboglinids and live in the dark, cold depths of the ocean where dead whales and fish sink to the seafloor, giving the worms their meals.