Tui De Roy / Galapagos lava lizard (Microlophus albemarlensis) sitting on Marine iguana (Amblyrhynchus cristatus) Punta Espinosa, Fernandina Island, Galapgos.

Tui De Roy / Galapagos Lava Lizard (Microlophus albemarlensis) on Marine Iguana (Amblyrhynchus cristatus), Punta Espinosa, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Lava Lizard (Microlophus albemarlensis) on Marine Iguana (Amblyrhynchus cristatus), Punta Espinosa, Fernandina Island, Galapagos Islands, Ecuador

Franco Banfi / Marine iguanas (Amblyrhynchus cristatus) basking on volcanic rock, Punta Espinosa, Fernandina Island, Galapagos Islands, East Pacific Ocean.

Ben Hall / Marine Iguana (Amblyrhynchus cristatus) on rock with lava lizard sitting on its head, Galapagos Islands, May.

Kevin Schafer / Galapagos Marine Iguana (Amblyrhynchus cristatus) with Lava Lizard (Trpoidurus) on head. Fernandina island, Galapagos.

Andy Rouse / Marine Iguana (Amblyrhynchus cristatus) with friendly Lava Lizard (Tropidurus) perched on its head. Puerto Egas, Galapagos, September.

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) pair silhouetted on lava shore at sunset, Cape Douglas, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Land Iguana (Conolophus subcristatus) rare social group basking together, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) group in over heated sky pointing posture with lava flow entering sea, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) group in overheated sky-pointing posture with new lava flow, Cape Hammond, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) mature male clings to lava rock along shoreline, Academy Bay, Santa Cruz Island, Galapagos Islands, Ecuador