Tube worm

Annelida – Polychaete


This twisted mass of calcium carbonate (limestone) found washed up on the beach was once home for a tube worm. The worm builds the limestone tube for protection against predators. If threatened or disturbed they will retract into the tube, closing their trap door or operculum behind them.

Did you know?

When alive, a tube worm has elaborate tentacles to filter the water for oxygen and food, such as plankton and other organic matter.