From the BBC:
Dolphins trained to kill for the Soviet navy have been sold to Iran - but what they will do in the Persian Gulf is a mystery.Islamofascism, Nuclear Weapons, Oil, Killer Dolphins, and still not America's biggest concern. What does Ahmadinejad have to do?
Dolphins and other aquatic mammals were trained by Russian experts to attack warships and enemy frogmen, but when funding for the project ceased, many were moved to a private dolphinarium to perform for tourists.
Update: