Introduction: Smoky feather-hydroid (Lytocarpus filamentosus) are identified by their distinctive upright, feathery stems. They often grow on algae.
Distribution: Swakopmund and Walvis Bay south to Sandwich Harbour, Luderitz to the Orange River mouth
Diet: Infinitesimal sea creatures
Colouration: Mottled black, smoky-grey and white
Breeding: Reproductive bodies are protected in flat, round structures
Max size: Colonies 15cm