The marine iguana defies every expectation of what a reptile can be. Evolved over millennia to eat algae from the ocean floor, these remarkable animals navigate powerful underwater currents using flattened tails built for propulsion and hooked claws designed for grip. They are the only lizards on Earth that feed in the sea, diving up to 30 meters, slowing their heart rate to conserve oxygen, then surfacing to warm their cold blood in the Galápagos sun. In them, we see what adaptation truly looks like! Photos by mitty #MarineIguana #Galapagos #Explore