Galápagos Islands, Ecuador

The sea lion looks at you. You look at the sea lion. The sea lion decides you are neither threatening nor interesting and returns to lying in the sun in the middle of the footpath. You step around it. This is the Galápagos Islands, where a million years of isolation produced wildlife that never developed a fear response to terrestrial predators, and where humans — present as a regulated, managed category of visitor since 1959 — have not disabused it of that assessment.

The Galápagos Archipelago sits 1,000 kilometres west of Ecuador in the Pacific, where the cold Humboldt Current from Antarctica meets the warm Panama Current from the north. The collision of these water masses produces an upwelling of nutrients that supports one of the most biodiverse marine ecosystems on the planet and, over geological time, drove the explosive adaptive radiation that gave Darwin his theory of evolution by natural selection. He visited in 1835 on the Beagle for five weeks. He later said he was not thinking about evolution at the time. The significance crystallised later, back in England, studying the finch specimens he had barely bothered to label.

Ninety-seven percent of the archipelago's land area is protected as Galápagos National Park — the remaining three percent is human settlement. The 127 islands range from the youngest (Fernandina, geologically active, with lava fields and flightless cormorants hauling themselves over black basalt) to the old and weathered (Española, covered in sea lions, Nazca boobies, and waved albatross staging grounds that constitute one of the world's great wildlife spectacles). Each island is a distinct ecosystem, shaped by its age, elevation, and position relative to the ocean currents. Genovesa — Darwin's Bay — rises from a volcanic caldera and hosts the largest red-footed booby colony on earth. Santa Cruz contains the Charles Darwin Research Station and the tortoise breeding program that has returned giant tortoises to several islands from which they were hunted to near-extinction.

The decision between a liveaboard cruise and a shore-based visit from Santa Cruz is the fundamental Galápagos planning question. The answer depends on what you want. Liveaboard vessels — ranging from eight-day itineraries on boutique 16-passenger yachts to fifteen-day expeditions covering every major island group — are the only way to reach the outer islands (Fernandina, Española, Genovesa, Marchena). The outer islands are where the most dramatic and undisturbed wildlife concentrations live. A shore-based visit from Santa Cruz's Puerto Ayora constrains you to the central islands — still extraordinary, but incomplete. The liveaboard is always the better choice if the budget allows.

Underwater, the Galápagos is one of the world's premier dive destinations. Hammerhead shark aggregations at Wolf and Darwin islands. Whale sharks patrolling the deep blue off Darwin's Arch. Marine iguanas grazing on algae at fifteen metres depth — the only ocean-swimming lizard on Earth. Galápagos penguins (the world's northernmost penguin species) porpoising alongside snorkellers in the clear, cold upwelling water of Fernandina Channel.

The logistics are managed but require attention. The National Park entry fee is USD $100 per person (paid at the airport). A Transit Control Card (USD $20) must be purchased online before travel. Only licensed vessels and guides can operate in the park. Visitor sites operate on a permit system that limits simultaneous access. This management framework — strict, sometimes bureaucratic — is what keeps the Galápagos functioning as the Galápagos. The blue-footed booby performing its courtship dance on the rock ten metres from your feet is an argument for it.