Tripneustes gratilla Linnaeus 1758
gracious urchin cake sea urchin
Tripneustes gratilla, gracious urchin  cake sea urchin

family Toxopneustidae

The gracious urchin, Tripneustes gratilla, has colours which vary between orange and dark purple. The short spines are white, sometimes tipped with orange.

Distribution =   widespread Indo-Pacific
Max size =   test diameter about 15cms, spines about 1cm