The animals are willing to submit to the experiments. The experiments are focused on the dolhpins' echolocation and communication systems. Dolphins communicate with other dolphins with a cariety of sounds and certain sounds that are associated with specific situations.
Marine dolphins and porpoises are in the same family. Bottle-nosed dolphin is Tursiops truncatus. Common Dolphin is Delphinus delphis. Common Porpoises is Phocaena phocaena.
