Flower Urchin

Looking like a bouquet of tiny flowers or a single dahlia, this species of sea urchin, commonly found in the Indo-West Pacific, looks like a harmless little gem, but it has caused pain to many snorkelers and divers who unknowingly touch coral reefs. Some effects are muscular paralysis, disorientation, and breathing problems. First aid: Most of the time, the flower urchin’s sting can be managed by removing its spike immediately from the skin and submerging the affected body part in hot water for at least an hour.