The Astropyga radiata is more commonly known as the fire urchin, and can normally be found in the Indo-Pacific ocean. Although just a small sea urchin, the fiery red appearance is a warning to any creature or human that comes near to it. These urchins boast incredible spines that can grow up to 4 cm long. However, these urchins also have smaller, hollow spikes that contain devastating venom. Although the venom is not always fatal, it can cause intense muscle spasms, lack of breath, and dizziness.