Pseudoboletia maculata, spotted urchin

Pseudoboletia maculata Troschel 1869

spotted urchin

tinged sea urchin

 The spotted sea urchin, Pseudoboletia maculata, has white and brown spines. It sometimes gathers weed and shells to cover itself.
Distribution =  Indo - Pacific
Max size =  at least 11cms across
Family =  Toxopneustidae