#snowdrop hydroid

Snowdrop Hydroid (Gattya humilis)

...a delicate species of colonial Halopterdid hydroid which is endemic to an area off the south African coast, ranging from Northern Namibia to KwaZulu-Natal. Snowdrop hydroids typically occur from the littoral zone to ~70 m (230 ft) under water, where they are usually found growing on coralline algae or weed. 

Classification

Animalia-Cnidaria-Hydrozoa-Hydroidolina-Leptothecata-Plumularoioidea-Halopterididae-Gattya-G. humilis