Sea Squirts and Salps; Tunicata

Sea Squirts and Salps are filter feeding creatures of 2 basic types; solitary and communal. It seems like we can find them at nearly all our shallow local dive sites.
They are not the sort of thing you get to meet on your Padi Open Water Diver course, but a delight for more experienced scuba divers, especially for underwater photography.

Fascinating filtering devices; both communal and solitary. They are very distantly related to us, due to a primitive backbone-like structure (3 Galleries).

Our variety of salps start as long chains and they break up over the days into single units. Harmless to divers!