Galápagos Marine Iguana
Meet the one and only marine lizard in the world! You can tell this one apart from land iguanas by its flattened, rather square nose, an adaptation for feeding on marine algae, and by the laterally flattened tail, an adaptation for swimming that helps it spend up to an hour underwater at a time, says Diez.
It’s also notable for being large and dark with variable coloration. You’ll usually find marine iguanas along the rocky shores or in a tree or cactus soaking up the sun.