Are there cone snails in the USA?

Poisonous cone snails of North America are predatory carnivores living in tidal waters from California to Florida. They're found under rocks in coral reefs and in mangroves. All cone snails are poisonous, and some can be deadly, but North American cone snails are not fatal to humans.

Can you survive a cone snail?

All cone snails are venomous and capable of "stinging" humans; if live ones are handled their venomous sting will occur without warning and can be fatal. The species most dangerous to humans are the larger cones, which prey on small bottom-dwelling fish; the smaller species mostly hunt and eat marine worms.