Ophiarachna megacantha, beetle brittle star

Ophiarachna megacantha Clark 1938

beetle brittle star

 

The beetle brittle star, Ophiarachna megacantha, is nocturnal, so it is not often seen. Their red arms are conspicuous. These animals move quickly. This an australian endemic brittle star.
Distribution =  Great Barrier Reef and NSW
Max size =  arm length at least 20cms
Family =  Ophiodermatidae