Marine Iguana

One of the many endemic species of the Galapagos Islands is the marine iguana (Amblyrhynchus cristatus).  This fascinating reptile looks downright creepy in the video below; a terrestrial alien venturing into the littoral zone (not unlike the humans in the video!).  The ancestors of these iguanas are thought to have emigrated from the mainland of South America in the fairly recent geologic past and speciated into marine and terrestrial species while on the Galapagos archipelago.  There are 6 recognized sub-species of A. cristatus, all of which exhibit diving and grazing behaviors such as seen in the video below.

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