9781422278253

Seaweed makes up the bulk of a marine iguana’s diet. The head has to be turned to one side for efficient grazing, which is often per­ formed below the water at high tide.

Because they venture into the water to feed, it is not surprising that marine iguanas are good swimmers, the tail providing most of the power for this exercise. These well-adapted creatures can remain submerged for surprisingly long periods.

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