Octocorals; Octocorallia

The Octocorals include Soft, Whip and Fan corals, plus the Sea Pens. Many of these Cnidarians are hosts to small macro beasties for our scuba diving underwater photography aficionados.

Alcyoniina - The Soft Corals

These Octocorals lack a hard protein skeleton, so can be called truly soft. (1 Album, 3 Galleries)

Ellisellidae - Whip and Wire Corals

Living where the currents run, featuring horny, flexible protein-based skeletons. (2 Galleries)

Holaxonia – Sea Fans and Whips

A colourful variety of filter feeding structures, all with dubious identities! (2 Galleries)

Pennatulacea - Sea Pens

Found out on the sand, beyond the coral reef. Some will retract quickly if alarmed by a blundering diver.

Scleraxonia - larger Sea Fans

A sub-order of beautiful filter feeders, always found where the currents can run strongly.

Other Octocorals

They all recognisably have 8 tentacles at least...