The Army has been using the underwater mammals since the 70s, and they remained under Ukrainian command after the collapse of the Soviet Union.
The bottlenose dolphins are trained to hunt for mines, plant bombs on hostile ships or attack enemy divers with special knives or pistols fixed to their heads.
The use of bottlenose dolphins as naval assets was begun during the Cold War in Sevastopol by the Soviet Union in 1973. With the collapse of the USSR, they were enlisted in the Ukrainian navy.
Now after the Russian repossession of the Crimean peninsula this month, it was revealed today that the combat dolphins are now back under Kremlin control along with all 193 military units in the region.