1. Marine iguana — the only sea-going lizard
The marine iguana is the only lizard on Earth that feeds in the ocean, grazing algae off submerged rocks. It sneezes excess salt out through a nasal gland, leaving white crusts on its head. You’ll find it on Isabela, Fernandina, Española, Floreana and Santa Cruz, with the largest, densest populations on Fernandina. In breeding season males turn red and green — the so-called “Christmas iguanas” of Española and Floreana.
2. Flightless cormorant — a seabird that gave up flight
With no land predators and rich cold seas below, this cormorant traded flight for diving. Its wings are stunted, useless in the air. It lives on the northwest coast of Isabela and eastern Fernandina — and nowhere else in the world. The whole species survives on roughly 1,600–2,400 birds.
3. Galápagos penguin — the only penguin north of the equator
This is the only penguin that lives at the equator, and part of its range crosses into the northern hemisphere. Cold currents make that possible. Most of it — about 95% — sticks to Fernandina and western Isabela, with smaller numbers on Bartolomé, Floreana and Santiago. The population is small and El Niño events crash their numbers.
4. Vampire finch — the finch that drinks blood
On remote Wolf Island, a ground finch pecks at the base of nesting seabirds’ feathers and drinks their blood. The behaviour probably started with eating parasites off the birds. Wolf is one of the far-northern islands, reachable only by liveaboard dive trips, so few travellers ever see it.
5. Pink land iguana — found on one volcano, nowhere else
The pink land iguana lives only on Wolf Volcano at the northern tip of Isabela — a single population of roughly 350 animals, and Critically Endangered. It wasn’t formally described until recent decades. Its range is permit-restricted, so it’s effectively off-limits to visitors.
6. Waved albatross — a courtship dance on one island on Earth
Almost the entire world population of waved albatross nests on Española. Pairs perform an elaborate bill-clacking, sky-pointing courtship dance. They’re on land roughly April to December and gone January to March, laying a single egg per year and sometimes skipping years.
7. Blue-footed booby — the feet, and what they signal
The blue-footed booby’s vivid feet aren’t decoration. Brighter feet signal a healthier, better-fed bird, and males show them off in a high-stepping courtship strut. Look for them on North Seymour, Española, Isabela and Floreana, with courtship and nesting around June to August.
8. Giant tortoise — temperature-set sex, century-plus lives
Giant tortoises can live well over a century, and nest temperature sets the sex of a hatchling — warmer nests produce females. About 12 species are alive today of the roughly 15 described. Hunted from a historical 200,000–300,000 down to about 20,000–25,000, some are recovering: Española’s tortoises came back from just 14–15 animals. Lonesome George, the last Pinta tortoise, died in June 2012.
9. Galápagos fur seal — a “seal” that’s actually a sea lion
Despite the name, the Galápagos fur seal is a sea lion, not a true seal. It favours cool, shaded, rocky shores and is best seen in the western islands, at James Bay on Santiago and Darwin Bay on Genovesa. It’s the smaller and shier of the archipelago’s two eared seals.
10. Red-footed booby — the booby that nests in trees
The red-footed booby is the smallest of the three Galápagos boobies and the only one that nests in trees rather than on the ground — its red feet grip the branches. The highest concentration is on Genovesa, with birds also on San Cristóbal, viewable roughly year-round. At Punta Pitt on San Cristóbal, all three booby species nest together — the only place they do.
