The marine iguana represents evolution's most remarkable adaptation, a creature that defies biological expectations by swimming through ocean currents and grazing on underwater algae in the world's most extraordinary archipelago.

As you step across the sun-warmed lava rocks, it almost looks like the ground is moving. Then you realise—you’re surrounded by marine iguanas, their scaled bodies soaking up the heat after a morning swim in the surf. One flicks its salt-crusted head, sneezes out a fine mist of seawater, and fixes you with a prehistoric stare.

Our expert naturalist guides know exactly where to find these extraordinary reptiles and how to interpret their behaviour—whether they’re basking en masse, grazing underwater algae, or scrabbling across the black volcanic shore. Let our Galápagos specialists bring you face-to-face with the world’s only ocean-going lizard!

A team of real experts, brilliant at designing bespoke holidays. Call 01273 923100 to start planning your Galapagos holiday today.

Jo IND kerela beach
"I’ve canoed the Lower Zambezi, wild camped in the Okavango Delta, and driven from the UK to Cape Town. I love getting under the skin of a place and its landscapes, wildlife, and culture."
Jo Shuttleworth, Director
Iguanas perches on small rock by the shore of a sandy beach.

Prehistoric Survivors of the Volcanic Shores

Imagine standing on a jet-black lava shoreline, where marine iguanas blend so perfectly with volcanic rocks that they become nearly invisible. Their prehistoric silhouettes emerge like living sculptures, a testament to nature’s extraordinary capacity for adaptation. Each iguana tells a story of survival, of species that have transformed themselves to thrive in one of the world’s most challenging environments.

Galapagos Marine Iguanas Walking On Tortuga Bay Beach, Santa Cruz

The Dance of Survival

Watch as these remarkable reptiles perform their daily ritual. Sunlight warms their dark bodies, preparing them for extraordinary underwater expeditions. When temperatures rise, they dive into churning ocean waters with surprising grace, transforming from seemingly awkward land creatures into elegant marine hunters. Our guides will help you understand the intricate biological mechanisms that allow them to graze on underwater algae and survive in this harsh ecosystem.

Marine Iguana (Amblyrhynchus cristatus) diving to forage for marine algae in the Galápagos Islands, Ecuador. Indigenous to this area, they can dive to depths greater than 100 feet.

A Unique Evolutionary Marvel

Marine iguanas are the world’s only seafaring lizards – a biological marvel that continues to fascinate scientists. Their ability to expel salt through special glands, dive to depths of 10 metres, and survive on a diet exclusively of marine algae represents one of evolution’s most extraordinary experiments. Each individual carries millions of years of adaptive history in its genes.

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