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Dr. Oz in the Galápagos Islands

By Dr. Mehmet Oz
Oprah Radio  |  February 11, 2009
Sea Lions

Sea lions are an example of mammals who took to water. Aquatic mammals have tails that move up and down, whereas fish have tails that move laterally. Sea lions are better suited to hunt in water, which has a connection to the aquatic ape hypothesis.

Photo: Stephen K. Mack
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