Sea Fire Urchin | Sea Hedgehogs

Astropyga radiata, the red urchin, fire urchin, false fire urchin or blue-spotted urchin, is a species of sea urchin in the family Diadematidae. It is a large species with long spines and is found in the tropical Indo-Pacific region. The venom in the constantly waving spines is only the primary defence mechanism. At the bases of the spines, which are articulated by ball-and-socket joints, are tiny, venom-filled pincers. So if you are impaled on the spines, there is more poison to endure.