Marine Mammal Protection Act of 1972 ensures that dolphins used in shows or zoos are not exploited . The National Marine Fisheries Service is the agency that regulates this law . The dolphins feed on fish and squid . At each day , it feeds almost one third of food of its weight . They are very swift and can outrun their prey . ``Dolphins are superbly streamlined and can sustain speeds of up to 30 km /h (up to 19 mph , with bursts of more...











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