Stingray's signature action is to wave its pectoral fin like a wing in the sea, and its tail cartilage is as slender as a whip with poisonous spines. There are about 480 species of stingray known.

According to the 1995 "dangerous marine organisms - first aid guidelines in the wild", stingray is the largest toxic fish known, with a tail of 37 cm long. If stabbed to the chest, it will cause serious injury or even death, especially for the heart, emergency operation is needed, but the heart injury usually leads to death.

Source: @laeviv.finelinemag