Under the sea

Tubeworm This is a feather-duster tubeworm. Tubeworms are polychaetes, marine worms that secrete a hard mineral substance or a horny material or glue sand grains together. Fan worms or feather duster worms are common on rocky shorelines. They stick tentacles on their heads out of their tubes to catch food. They can quickly withdraw into their tubes when threatened, protecting them from most predators. Polychaetes are related to earthworms.

 

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Lucifer		Crab Larva		Tubeworm		Tiny Shell		More Marine