divepix - Algae hydroid

Algae hydroid

Aspect:	Small branches alternately grow in a single plane on either side of a relatively short stem. Polyps on the other hand, grow off the branches symmetrically.
Population:	Common in certain areas.
Notable feature:	Stem and branches tend to be light brown, polyps are snow white.
Environment:	Grow off vertical structures that provide a steady water flow. Shipwreck masts and window frames are popular locations.
Behaviour:	-