How to prepare combat dolphins
From the family of Delphinidae as combat best suited bottlenose dolphins, they are from birth, "equipped with" unique ultrasonic device.
These animals are able to recognize objects by a layer of silt and feel the approach of objects over long distances. About talent bottlenose find items at a depth of legends. They are able to detect even the nuts and bolts, to show them and scattered on the waters of the bay.
Prepare combat dolphins in the United States and the Soviet Union began almost simultaneously - in the 60s of the last century. And now there are only two centers of preparation of marine animals - San Diego base in the US and Sevastopol.
In Sevastopol in 1967 fighting dolphins trained in Cossack Bay, the first Soviet military aquarium. Brought to 50 bottlenose dolphins. On the part of the training looked normal game with animals. That's just as "toys" were different dummy mines and even training torpedo.
The animals were trained precisely on lost torpedoes, which had long been "buried" in the mud. Find their human forces, even the most experienced diver, it was extremely difficult. Dolphin-trained photographers to use the camera, can withstand depths of over 100 m. The animals were taught to correctly point the lens at the target, freeze and just at that moment release the shutter.
"Services" dolphins later began to use not only military, but also archaeologists. Pets looking for wrecks and raised from the bottom of various ancient values.