Genus
Common name: Heart Urchins
Scientific name: Echinocardium
Echinocardium is a genus of burrowing sea urchins commonly known as Heart Urchins or Sea Potatoes due to their heart-shaped test and potato-like appearance. These urchins are part of the family Loveniidae and are found in sandy substrates where they play a role in bioturbation. They are not common in the reef aquarium trade, but their unique shape and behavior can be fascinating. In the wild, they use their spines and tube feet to burrow and feed on detritus.