Dolphins and man have had a relationship with each other since ancient times, adapting well to human companionship either in captivity or out. Several dolphin species, notably bottlenose and common dolphins, pilot whales and orcas, are popular performers in marine-themed amusement parks and aquariums. Dolphins have also been trained by the United States Navy to retrieve objects or weapons lost at sea, or to act as “guard dogs” around submarine facilities. | Dolphins and man have had a relationship with each other since ancient times, adapting well to human companionship either in captivity or out. Several dolphin species, notably bottlenose and common dolphins, pilot whales and orcas, are popular performers in marine-themed amusement parks and aquariums. Dolphins have also been trained by the United States Navy to retrieve objects or weapons lost at sea, or to act as “guard dogs” around submarine facilities. |