Bites and Infestations

Picture of Sea Urchin Dermatitis

Picture of Sea Urchin Dermatitis

Sea Urchin Dermatitis. These black puncture marks are the spines of a sea urchin which have broken off in a big toe. The tips of the spines have claw like pincers called pedicellariae that allow them to stay in your skin. Some species or sea urchins are poisonous but their stings are rarely fatal. Try to remove them as soon as possible and keep the area clean.

Image Source: SCIENCE PHOTO LIBRARY / Science Source
Text Source: National Library of Medicine / DermNet NZ / UpToDate