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Dolphins are highly social, playful and interactive sea mammals. Traveling around in pods, they can sometimes merge into super pods, making up more than 1,000 dolphins at any given time. They communicate with each other, are sympathetic and empathetic, almost having a sixth sense about their own kind and others as well.
from: http://ezinearticles.com/?The-Wonder-Of-Dolphins&id=7052070
