Black Sea Urchin (Diadema antillarum)
Image Copyright Jonathan Milnes
Observed: Koh Chang Reefs, December 2015
Observed By: Jonathan Milnes
Watch out for the sharp and brittle spines of the black sea urchin. A trailing hand or foot that brushes against them will cause them to break off in the flesh and despite having no poison they can easily cause infection and are the very devil to remove.
The black sea urchin, as you’d imagine has a black-coloured body and spines. It is massively widespread and is the most abundant herbivore on the coral reefs of Koh Chang.
