Despite protection from their strong, conch are still victims of predation by various species. For example, other sea snail species are predatory and use powerful enzymes and a drill-like appendage to bore a hole in the shell of others. Conch are common victims to several of these large species of sea snails. Also, various species of octopus will attack the conch, removing it from its shell with its tentacles and hard beak. Various crustaceans, fish, and sea turtles will also feed on conches, especially when they are younger and their shells are softer and less developed. Finally, nurse sharks will also feed on conches. Given so many predators in its natural environment, it is easy to see why it has evolved such a hard, thick shell for as much protection as is possible.