marine iguana huddle side by side, fernandina, galapagos

apparent black bleached bodies caring claws colony colour companionship conservation contrasts courtship crest crested darwin display dominant dragon dragonlove ecology evolution feeding female fernandina galapagos herpetology huddle iguana iguanas islands lava licking lizards loving male mangrove marine mating naturalselection ocean old pair pairing reptiles scales scaly sensory side stump tasting tongue topdog warm wood