OR, Have you ever seen Jaws?

When the ocean rise, the seas will become our greatest source of food. The surf will come alive with fish and crustaceans. Prawns will swarm like flies. Marlins will flop through town like cattle. But with great abundance come great threat. Man's most formidable opponent, THE SHARK, will pose a great problem to future of civilization.

With that in mind, the fine folks at WASP KNIVES have created this little puppy. The Wasp Knife uses compressed air to make sashimi out of our toothed foe. It uses a standard, easy to load CO2 cartridge, which is easy to reload both in and out of the ocean. And, with multiple hand options, it will fit any diver's hand. 

(don't let this happen to you)