Hydroides

Hydroides is a genus of tube-forming serpulid worms found on submerged saltwater rocks, shells, and boats in many coastal areas around the world.

Species
It contains the following species:
 * Hydroides bispinosa (Bush, 1910)
 * Hydroides brachyacantha (Rioja, 1863)
 * Hydroides crucigera (Moerch, 1863)
 * Hydroides dianthus (Verrill, 1873)
 * Hydroides dirampha (Mörch, 1863)
 * Hydroides elegans (Haswell, 1883)
 * Hydroides ezoensis (Okuda, 1934)
 * Hydroides huanghaiensis (Sun & Yang, 2000)
 * Hydroides lirs (Kupriyanova, Sun, ten Hove, Wong & Rouse, 2015)
 * Hydroides longispinosa (Chen & Wu, 1980)
 * Hydroides microtis (Mörch, 1863)
 * Hydroides norvegica (Gunnerus, 1768)
 * Hydroides parva (Treadwell, 1902)
 * Hydroides protulicola (Benedict, 1887)
 * Hydroides sanctaecrucis (Krøyer in Mörch, 1863)
 * Hydroides xishaensis (Chen & Wu, 1978)

Ecology
Parasites of Hydroides include sea snails from the genus Fargoa.