Amblyrhynchus cristatus reaches 1.2 m. The world's only marine lizard, endemic to the Galapagos Islands (East Pacific). Black to gray body, prominent dorsal crest. Specialized herbivore, dives to feed on algae on rocky shores. Critical temperature regulator - basking in sun to maintain body heat. Population threatened by fishing and climate change (IUCN VU). Iconic species for Galapagos divers.
