Expedition Cruises, DecodedGalápagos

Nine hundred miles off Ecuador, the islands were never colonized by predators that hunt on sight, and the animals that evolved here simply never learned that humans are a threat. The result is unlike anywhere else in expedition travel: a sea lion sprawled across the trail that won't so much as lift its head, a blue-footed booby dancing its odd, deliberate courtship dance close enough to photograph without a zoom lens, a marine iguana — the only lizard on the planet that swims — sneezing salt inches from your boots. You don't spot wildlife here. You walk through it.

Darwin sailed here in 1835 and the finches he studied quietly rewrote biology. Today the islands are almost entirely a national park and a UNESCO World Heritage Site, with visitor numbers, landing sites, and guide ratios all tightly regulated to keep it that way. That regulation is exactly why a cruise, not a resort, is the way to see it — the good stuff is spread across dozens of islands, and a ship is the only way to wake up at a new one each morning.

Everywhere, most of the year: sea lions hauled out on every beach and dock, marine iguanas draped over black lava rock, frigatebirds with their absurd inflatable red throat pouches, and Sally Lightfoot crabs painting the shoreline orange. Blue-footed and Nazca boobies show up across multiple islands too — you don't need a specific route to see the famous dance.

Island-specific, and worth planning around: the waved albatross breeds almost nowhere but Española, and only April through December — miss the island or the window and you miss the bird entirely. Galapagos penguins and the flightless cormorant live almost exclusively around Isabela and Fernandina, meaning only a Western itinerary reliably delivers them. Land and marine iguanas, giant tortoises in the highlands, and Genovesa's red-footed booby colonies each have their own islands too.

Underwater: snorkeling here is not an afterthought — sea turtles, reef sharks, spotted eagle rays, and (June–November, western waters) manta rays and the chance of whale sharks. The marine iguana is the only lizard on Earth that forages underwater, and watching one dive is one of the stranger, better things you'll see anywhere.

A land-based trip means basing yourself in one of four inhabited towns — Puerto Ayora, Puerto Baquerizo Moreno, Puerto Villamil, or Isabela — and taking day-trip boats out to nearby sites. It's cheaper, and it works if your time or budget is actually tight. But you're limited to whatever a day boat can reach and return from before dark, which rules out the majority of the archipelago's best, most remote sites — the ones with the highest wildlife density and the fewest other visitors.

A cruise solves this by putting your hotel room on the boat: you sail overnight and wake up at a new, often uninhabited island each morning, with no day-trip radius limiting where you go. It's the only way to reach the outer islands, and it's where nearly all of the iconic, up-close wildlife encounters described on this page actually happen. Unless your trip is truly built around Ecuador's mainland with the Galápagos as a brief add-on, book the ship.

Panga rides are the workhorse of every itinerary — small inflatable boats (called pangas locally, the same idea as an Antarctic Zodiac) that cruise mangrove shorelines and coves for wildlife you'd never reach on foot, and ferry you to wet landings (wade ashore from the boat) or dry landings (step onto a dock or rocks) for hikes among the colonies.

Snorkeling is the single most popular activity in the islands and shows up on nearly every day's schedule — sea turtles, playful sea lions that will happily swim circles around you, and the odd reef shark cruising past. Most ships supply gear at no extra charge. Kayaking and stand-up paddleboarding are common add-ons for exploring quieter coves at your own pace, and a few operators run glass-bottom boat tours for non-swimmers.

On the inhabited islands, you might visit the Charles Darwin Research Station, see baby giant tortoises being reared for release, or stop at the world's smallest and strangest post office — a barrel where 18th-century whalers left letters for passing ships to hand-deliver, and where visitors still do the same today. It's a nice change of pace, not the point of the trip.

A short 4-to-5-night sailing on a budget catamaran starts around $2,500 to $3,500 per person. A full week on a mid-range vessel runs $3,500 to $6,000, and true luxury — the Silversea, Celebrity, and Aqua Expeditions tier — climbs to $6,000 and past $15,000 for a week, depending on suite category. Fares are largely all-inclusive of meals, twice-daily guided excursions, and snorkeling gear; premium operators fold in alcohol and even flights from mainland Ecuador.

Budget separately for the $100 Galapagos National Park entrance fee and a roughly $20 INGALA transit card, both paid in cash on arrival, plus flights to Quito or Guayaquil and the connecting flight into the islands (Baltra or San Cristóbal airport, depending on your itinerary). December through January and June through August are the highest-demand windows — book six to twelve months out for the ship and cabin you actually want.