Cone snails hunt worms and other snails. A few eat fish, and these varieties are most harmful to humans. Avoid contact with these animals. The animal's harpoon can penetrate even gloves. The toxin is similar to the paralytic toxin of the Pufferfish and Blue-ringed Octopus .
Symptoms can begin within minutes or take days to appear.
Use the pressure-immobilization technique. The extremity should be wrapped with a bandage similar to wrapping a sprained ankle. Bind the limb firmly but do not block the circulation. Fingers and toes should remain pink. Leave bandages intact until medical care can be reached.