Cone snails are carnivorous and predatory. ... Cone snails are slow-moving, and use a venomous harpoon (called a toxoglossan radula) to capture faster-moving prey, such as fish. The venom of a few larger species, especially the piscivorous ones, is powerful enough to kill a human.

What can cone shells do to you?

Cone Snail Sting Symptoms

Symptoms include intense pain, numbness, and tingling. Symptoms can begin within minutes or take days to appear. Severe cases of cone snail stings involve muscle paralysis, blurred/double vision, and respiratory paralysis, leading to death.

Which cone snails can kill humans?

The good news is only two species (Conus textile and Conus geographus) are known to have actually killed humans, and the number of known cone snail fatalities is less than 100.