Mini Godzillas of the Galápagos <br /><br />Marine iguanas have evolved to hold their breath and free dive in order to graze on the abundant underwater algal beds around the productive Galápagos archipelago. Being cold-blooded animals, after a 30-min or so dive in chilly waters, these little, Godzilla-looking creatures bask in the sun for most of the day in order to regain body heat, and digest the algae in their bellies.