Best Cake Urchin
Arachnoides placenta is a species of irregular sea urchin, commonly known as a sand dollar or cake urchin, belonging to the family Arachnoididae. This marine invertebrate is characterized by its flat, disk-like morphology, which is an evolutionary adaptation that allows it to burrow efficiently into...
Echinolampas depressa is an irregular sea urchin species in the family Echinolampadidae. As an irregular echinoid, it has a secondarily bilateral body plan and a flattened test, the rigid shell made of interlocking plates. Those traits separate it from regular sea urchins, whose bodies are organized...
Echinolampas ovata is an irregular marine sea urchin in the family Echinolampadidae and the class Echinoidea. It is a benthic tropical species of the Indo-West Pacific, with records from the Philippines, Australia, and the South China Sea, and it has been reported from roughly 9 to 75 meters depth....
