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A marine iguana, found only on the Galapagos Islands, lounges on a rock on Isabela Island. The marine iguana is the only modern lizard that lives and forages in the sea and its primary food source is marine algae. Because they have to rid their bodies of excess salt, one can often see marine iguanas making a sort of sneezing sound and expelling water and salt from their noses.  In the distance one can see the Celebrity Xpedition ship, one of the cruise ships that bring visitors to the Galapagos Islands.