Detail of a hydranth - note nematocladium with pseudostenotele nematocyst.

Detail of spines and pedicellariae.

Dorsal view.

Sperm release by genital papillae.

Hydrocladia.

Hermit crab.

Adulto em vista aboral - detalhe da superfície do corpo, detacando espinhos, pedicelárias e pés ambulacrais.

Orifice through which the inhalant siphon of the bivalve is extended, and star-shaped marks left on the sediment its retraction.

Hydranths.

Fiddler crab.

Tentacle nematocysts.

Adult specimen.

Dorsal view.

Black sea urchin.

Young medusa.

Larva.

Adult in aboral view.

Distal introvert.

Adult specimen in dorsal view.

Male colony.