By:
Patrick Ellis Published:
05 June, 2010
Dolphins
Dolphins are not fish. They are mammals. Thus, they have teeth, are warm-blooded, have a four-chambered heart, and nurse their young from mammary glands. They even have hair - but not a lot! The mothers feed milk to their young for months and the young calf stays with the mother and other dolphins in the pod for years. Dolphins have one blow hole on top of their head and, depending on the species, age and physical condition, can stay submerged for more than 20 minutes. They can travel as much as 80 or 90 miles in a day . Their...
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