The Galapagos Marine Iguana (Amblyrhynchus cristatus) is the world’s only truly marine lizard and lives only in the Galapagos, where it is quite common.
They normally feed midmorning using their laterally compressed tail for propulsion. Males are strong swimmers and can dive to a depth of 10m, where they hook onto the bottom with their sharp claws before feeding on red or green algae-type seaweed.
The dives are normally of short duration of around 10 minutes, but the can stay submerged for up to an hour. After a dive in the chilly waters they stay for extended hours in the sun to increase their body temperature.