Sessile Hydrozoan

Dynamena pourtalesi

• Group: Other
• Typical depth: 0–44 m

A colonial hydroid that grows as low feathery tufts on rock, mangrove roots and other surfaces down to about forty metres. Each tiny polyp catches plankton with stinging tentacles, and the colony also turns up drifting among floating Sargassum.

Taxonomy: Animalia › Cnidaria › Hydrozoa › Leptothecata › Sertulariidae › Dynamena

Species data via the World Register of Marine Species (WoRMS), AphiaID 1388389.