The Galapagos Marine iguanas (Amblyrhynchus cristatus) is an iguana that has a unique ability to forage in the sea, making it the only seafaring marine reptile.
Marine iguanas are algae eating, color-changing, free-diving reptiles with a habit of sneezing. (Because they eat while swallowing saltwater.)
When not feeding, they typically lay in the sun all day, because they are cold-blooded. They need the warmth of the sun to aid in digesting their food and keep body temperature up.
Males display bright colors during mating season.