Unknown Sea Urchin 1

Unknown Sea Urchin 1

This unknown species is relatively common at Axial, living among the basalt lava rocks. Photo credit: NSF-OOI/UW/CSSF; Dive R1731; V14

This is easily the most common sea urchin found on Axial. It is often observed hiding among the lobed basalt lavas. Its size is only 10-15 cm in diameter.