I love dolphins! There are 40 species of them. 
Me too! How do they communicate?
, in that the males are larger than females. They have streamlined bodies and two limbs that are modified into flippers. Though not quite as flexible as seals, some dolphins can travel at . Dolphins use their conical shaped teeth to capture fast moving prey. They have well-developed hearing which is adapted for both air and water and is so well developed that some can survive even if they are blind. Some species are well adapted for diving to great depths. They have a layer of fat, or blubber, under
almost all external stimuli, as a means to explore the nature of human consciousness. He later combined that work with his efforts to communicate with dolphins, as well as experiments with psychedelics.
During a session in an isolation tank, constructed over a pool where dolphins were swimming, I participated in a conversation between the dolphins. It drove me crazy, there was too much information, they communicated so fast.
His work inspired two Hollywood movies, "The Day of the Dolphin" and "Altered States".