Sharks With Frickin Laser Beams?
Finally an answer to Dr. Evil's famous request: "You know, I have one simple request. And that is to have sharks with frickin' laser beams attached to their heads!"

Well not sharks, but he can get dolphins with toxic dart guns:

It may be the oddest tale to emerge from the aftermath of Hurricane Katrina. Armed dolphins, trained by the US military to shoot terrorists and pinpoint spies underwater, may be missing in the Gulf of Mexico.

Experts who have studied the US navy's cetacean training exercises claim the 36 mammals could be carrying 'toxic dart' guns. Divers and surfers risk attack, they claim, from a species considered to be among the planet's smartest. The US navy admits it has been training dolphins for military purposes, but has refused to confirm that any are missing.

Perhaps they are ill tempered as well?