Lamellibrachia luymesi is a species of tube worm in the genus Lamellibrachia. Tube worms are animals that have 'roots' and live at the bottom of the Ocean in cold seeps.
Cold seeps are cracks in the Ocean floor where different gases and hydrocarbon-rich fluids pool. These tube worms are animals, but they have 'roots' that anchor into the floor and draw up these hydrocarbons.
They convert these hydrocarbons into molecules that they expel into the inside of their tube, where symbiotic microorganisms eat them. And the tube worms, in turn, eat these microorganisms to subsist.
Tube worms can grow up to 10 feet long, and live to be over 250 years old.
They often form thickets of tube worms, which become ecosystems in places where life otherwise has a hard time taking root.
Cold seeps are yet another one of those strange places that life manages to create biodiverse ecosystems at the bottom of the Ocean, like hydrothermal vents, wooden shipwrecks, and whale falls.