Stingray Injury: Injuries from sharklike stingrays are usually defensive actions, not attacks. Once disturbed, their venomous stinger (spine) at the base of their tails lashes out and can cause cuts or punctures. Read the Stingray Injury Main Article Doctor's Notes on Stingray Injury Symptoms Must Read Articles: Wilderness: Stingray Sting Featured: Stingray Sting Stingrays have flat bodies with long, slender tails that have serrated spines. Their serrated spines can cause lacerations (cuts) and puncture wounds. The spines also contain venom.