Salmacis sphaeroides (White sea urchin)

Body diameter 5-8cm, with short sharp white spines (1-1.5cm). Some have white spines with maroon bands, others with all maroon spines, and yet others with green and maroon bands. It is not certain if these are different species or just colour variations.

Spines on the upper side are sharp. Spines on the underside have spade-like tips. It has long tube feet and is often seen carrying all kinds of things from shells to seaweeds. It can quickly gather these things to cover itself.

Algen sowie Kleinorganismen in und auf diesen.