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Diadem Sea Urchin
Diadema setosum
28.4714, 34.5053
Field Notes
Description:
It is a typical sea urchin, with extremely long, hollow spines that are mildly venomous. D. setosum differs from other Diadema with five, characteristic white dots that can be found on its body. In addition, a clear distinguishing characteristic of the species is the presence of a bright, orange ring around the urchin's periproctal cone, a structure commonly referred to as the urchin's "anus". A few other minor characteristics in D. setosum include bluish spots on the organism's genital plates and similar blue spots (iridophores) arranged in linear fashion along its test. (wiki)
Habitat:
Marine; The species can be found throughout the Indo-Pacific region, from Australia and Africa to Japan and the Red Sea. (wiki)
Notes:
Despite capable of painful stings when stepped upon, the urchin is only slightly venomous and does not pose a serious threat to humans. (wiki)
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