 Because the worm is constantly irrigating its tube by pumping water through it, suspended particles on the sea bed and in the water column are sometimes drawn into the feeding cavern and ingested.It has been found that foraminifera, ciliates and small copepods are the main diet of the worm.However it disproportionally favours larger particles including nematodes, crustaceans and larger foraminifera even though these are too big to be digested.