Where Do Hydroids Live

HABITAT. Hydroids live in all water habitats, from sea caves to deep-sea trenches, from lakes and ponds to rocky coasts and between grains of sand.

Where are hydroids found?

Hydroids are largely sessile epibenthic cnidarians that inhabit all marine habitats from shallow to abyssal waters (Vervoort [1966]). Since hydroids feed on plankton, they likely play an important role in marine ecosystems (Gili and Hughes [1995]).

Where are hydrozoa found?

Most Hydrozoans live in saltwater but some species, like Hydra, are found in freshwater. Most hydrozoans have both a polyp stage and a medusa stage in their life cycles. Most are found as small colonies made up from tiny polyps connected together by hollow stems (called hydrocauli).