%20(1).png){kind=logo}
Diving the Galapagos means cold, current-swept volcanic rock and a lot of big animals: schooling scalloped hammerheads and whale sharks at Wolf and Darwin, ocean sunfish and penguins in the chilly west, and sea lions in the shallows almost everywhere. It is advanced, physical, sometimes uncomfortable diving, and the wildlife is the best reason there is to put up with it.
LiveAboard.com doesn't sponsor this guide and doesn't see it before it's published - we recommend them because it's useful information for planning your trip. If you book through our links, we may earn a small commission at no extra cost to you.
Picture it. You are hanging on a rock at about twenty metres with your fingertips, the current is pulling your mask sideways and your computer says the water is colder than you would like. Then the blue in front of you fills with hammerheads. Not one or two. A slow, grey wall of them, heads swinging side to side, sliding past like they have somewhere to be. Nobody in your group is breathing slowly any more, and your air consumption is about to become a talking point at dinner. These islands sit right where several ocean currents meet, about a thousand kilometres off the coast of Ecuador, and that mix of cold upwelling and warm tropical water feeds a food chain that ends in some of the biggest marine animals you will ever see. This is not a place for drifting gently over pretty coral. It suits divers who are comfortable in current, happy in a thick wetsuit and willing to swap reef colour for big animals. If you already know you want to go, you can compare boats and dates on LiveAboard.com.
When is the best time to dive the Galapagos?
There is no bad time to go, just two different kinds of good. The Galapagos has two broad seasons, and each one changes the water, the conditions and which big animals are around.
Cool season (roughly June to November)
The Humboldt Current pushes cold, nutrient-rich water into the islands. Water temperatures commonly drop to somewhere around 16-24C, and they are usually coldest from about July to October. All that plankton can cut visibility, but it is also what brings the big animals in. This is the classic window for whale sharks (Rhincodon typus) at Wolf and Darwin, which are most often reported from about July to October, alongside big schools of scalloped hammerheads (Sphyrna lewini). Seas on the surface are often rougher in this season, so if you get seasick, bring whatever works for you.
Wetsuit: 7mm with a hood is the sensible choice. Many divers add gloves where operators allow them, or a vest under the suit. Thermoclines can drop the temperature by several degrees in a single fin kick, and nobody has ever climbed out of the Bolivar Channel saying they wished they had worn less neoprene.
Warm season (roughly December to May)
Warmer water spreads through the islands, temperatures commonly reach the mid to high twenties Celsius and the sea is generally calmer. Visibility is often better. Hammerheads are still commonly encountered at Wolf and Darwin, as they are all year round. Manta encounters are frequently reported in the warm season too. Whale sharks are less reliable, but this is a good time for divers who want easier surface conditions and a little more comfort between dives.
Wetsuit: a 5mm with a hood or hooded vest is usually enough, although the western islands can stay cold all year, so many divers bring a 7mm whatever the month.
Insider tip: Sources disagree on exact peak months, and the ocean does not read calendars. El Nino years can change temperatures and animal behaviour completely. If one particular animal is the reason you are going, ask your operator what their recent trips have actually seen, not what the brochure says.
Wolf and Darwin: the hammerhead highway
These two small, remote islands in the far north are the reason most divers book a Galapagos trip. They sit far from the central islands, and the only way to dive them is on a liveaboard, usually after a long overnight crossing. The water here is generally warmer than in the rest of the archipelago, but the currents are strong, entries are often negative (you descend straight away, no faffing on the surface) and most dives are spent hooked or tucked in behind boulders on a slope, watching the blue.
And the blue is busy. Scalloped hammerheads (Sphyrna lewini) are the headline act, often in schools, cruising the current line and sometimes coming in close to cleaning stations where small fish pick at their skin. Galapagos sharks (Carcharhinus galapagensis) patrol closer to the rocks with the confidence of an animal that has its name on the islands. Silky sharks (Carcharhinus falciformis) turn up in the blue, and in the cool season whale sharks (Rhincodon typus) slide past like submarines that forgot to file a route. Bottlenose dolphins (Tursiops truncatus) are reported here often enough that guides talk about them, and green turtles (Chelonia mydas) rest on the rocks between all the excitement.
The top of Darwin's famous rock arch collapsed in May 2021, leaving just two stone pillars, so if you see the full arch in older photos and wonder where it went, nature took it. The diving around the base still goes on.
Who it suits: Experienced divers who are comfortable in strong current, with negative entries and in deeper water. Many operators ask for a minimum number of logged dives, so check before you book.
Insider tip: The best place to be is usually low, still and tucked into the rocks. Big animals avoid noisy divers who are kicking hard to stay in place, so the diver who looks calm (even if they are not) tends to get the closest passes. Practise good buoyancy and slow breathing before the trip and you will see more, and you will stop being the reason the dive ends early.
Isabela and Fernandina: the cold, strange west
The western side of the archipelago, around the Bolivar Channel between Isabela and Fernandina, is the youngest and most volcanic part of the Galapagos, and it feels like it. Black lava rock, cold upwelling and some of the oddest animals in the islands. This is generally the coldest water in the Galapagos, and thermoclines can make a dive feel like walking from summer into winter. Visibility varies a lot with the plankton.
The animal everyone hopes for is the ocean sunfish (Mola mola), a huge, flat, faintly baffled-looking fish that comes up from deeper water to have small fish clean its skin. Sites on north-west Isabela are among the most often mentioned places to see them. Then there are the reptiles. Marine iguanas (Amblyrhynchus cristatus) are the only lizards in the world that feed in the sea, and watching one cling to a rock in the surge while it chews algae is one of the strangest things you will ever see on a dive. Galapagos penguins (Spheniscus mendiculus) dart through the shallows like feathered torpedoes, and Galapagos sea lions (Zalophus wollebaeki) often join in. Flightless cormorants nest along these coasts too and can sometimes be seen hunting underwater, so keep an eye out in the shallows.
Who it suits: Intermediate to advanced divers who can cope with cold water and surge. The shallower dives and snorkelling are where many of the reptile and penguin encounters happen.
How to get there: Mostly by liveaboard. Some itineraries include the west and some do not, so read the route carefully.
Insider tip: Don't skip the shallow dives and snorkels here because they look less impressive on paper. Some of the most memorable Galapagos moments happen in three metres of water. Keep your camera ready for the surface interval too.
The central islands: Santa Cruz, North Seymour and Gordon Rocks
The central islands are where most visitors arrive, and they are the base for land-based diving in the Galapagos. Around Santa Cruz, Baltra and the islets nearby, dive boats run day trips from Puerto Ayora to sites including North Seymour and Gordon Rocks, an eroded volcanic crater famous for strong currents. Liveaboards also usually do their check dives here before heading north or west.
Conditions range from fairly gentle to properly sporty. Gordon Rocks in particular has a reputation for current and is generally treated as an advanced dive. Around North Seymour you will commonly see whitetip reef sharks (Triaenodon obesus) resting on the sand, often in groups, as if they are all waiting for the same bus. Schools of golden cownose rays (Rhinoptera steindachneri) move through like a slow, golden squadron, and Galapagos sea lions are always on hand to remind you that they are much better at this than you are. Reef fish here are dense and colourful in their own way, including king angelfish (Holacanthus passer) and big schools of barberfish (Johnrandallia nigrirostris).
Who it suits: A wider range of divers. Some sites work for newer divers, others (Gordon Rocks especially) need real current experience.
Insider tip: If you are land-based and want to try the bigger stuff, ask the dive centre which sites they will visit on which day and match them to your experience honestly. Current in the Galapagos can be much stronger than people expect, and turning a dive down is a skill, not a failure.
San Cristobal and the east: Kicker Rock and sea lion playgrounds
San Cristobal, in the east of the archipelago, has its own airport and town, which makes it the second main base for land-based divers. Its best-known dive is Kicker Rock (Leon Dormido), a split volcanic rock that rises out of the sea off the coast, with a narrow channel through the middle. The walls drop into deep water and are a common place to see sharks and rays, depending on conditions.
Commonly encountered animals include Galapagos sharks (Carcharhinus galapagensis), whitetip reef sharks (Triaenodon obesus), green turtles (Chelonia mydas) and, closer to shore, a lot of Galapagos sea lions (Zalophus wollebaeki). The sea lions here are famously cheeky. Young ones will zoom in, blow bubbles at your mask, nibble your fins and leave before you have worked out what just happened. Hammerheads are sometimes reported around Kicker Rock as well, but this is the Galapagos, so they always seem to have been there yesterday.
Who it suits: Intermediate divers and above for the deeper walls, while snorkellers and newer divers often enjoy the shallower channel when conditions are calm.
How to get there: Day boats from San Cristobal, and some liveaboard routes include the eastern islands.
What marine life will you see in the Galapagos?
Big animals
Big animals are the reason you are here. Scalloped hammerheads (Sphyrna lewini), Galapagos sharks (Carcharhinus galapagensis), silky sharks (Carcharhinus falciformis) and whale sharks (Rhincodon typus) are the big names in the north. Oceanic manta rays (Mobula birostris) are encountered around the islands, as are bottlenose dolphins (Tursiops truncatus), and the ocean sunfish (Mola mola) is the reward for braving the cold in the west. Green turtles (Chelonia mydas) are a familiar sight on many dives. None of this is guaranteed. Wildlife is wild, and the dive that 'always' has hammerheads will occasionally have none.
The animals that only make sense here
The Galapagos is one of the few places where reptiles, penguins and sea lions share the water with sharks. Marine iguanas (Amblyrhynchus cristatus), Galapagos penguins (Spheniscus mendiculus) and Galapagos sea lions (Zalophus wollebaeki) give you some of the most surprising moments of the trip, often in very shallow water.
Reef fish and the smaller stuff
The reefs here are rocky rather than coral-covered, but the fish life is thick. Look for king angelfish (Holacanthus passer), razor surgeonfish (Prionurus laticlavius) moving in big schools, barberfish (Johnrandallia nigrirostris), Moorish idols (Zanclus cornutus), bumphead parrotfish (Scarus perrico) and hieroglyphic hawkfish (Cirrhitus rivulatus) perched on rocks like they own them. For fans of the small and strange, the red-lipped batfish (Ogcocephalus darwini) walks across the sand on its fins wearing what looks like bright lipstick, and the Galapagos bullhead shark (Heterodontus quoyi) is a small, spotted, bottom-dwelling shark that photographers get very excited about. Expect at least one macro shooter on your boat to come up with 400 photos of a single batfish and no regrets.
Liveaboard or land-based?
This decision mostly depends on one question: do you want to dive Wolf and Darwin? If yes, you need a liveaboard. Those islands are too far for day boats.
Liveaboard
Pros: access to Wolf, Darwin and often the cold-water west; several dives a day at sites with the most big animals; no packing and unpacking. Cons: higher cost, long crossings that can be rough, and an advanced-level dive plan. Most Galapagos dive liveaboards run about a week, and they usually start and finish at Baltra or San Cristobal. Itineraries vary a lot, so check which regions a trip actually visits. You can compare routes and departure dates on LiveAboard.com, which makes it easy to see which trips include the west and which go straight north.
Land-based
Pros: cheaper, more flexible, easy to mix diving with land tours to see giant tortoises and seabird colonies, and good for non-diving partners. Cons: you dive central and eastern sites only, with longer boat rides to some of them and no access to Wolf and Darwin. Land-based suits divers with less experience, families, or anyone who wants a broader Galapagos trip with a few good dives in it.
A common approach is a liveaboard for the diving, with a few extra days on land afterwards, which also helps with your no-fly time.
How do you get to the Galapagos?
International flights land on mainland Ecuador, usually at Quito or Guayaquil. From there, domestic flights go out to the islands, mainly to Seymour Ecological Airport on Baltra (next to Santa Cruz) or to San Cristobal. Most dive liveaboards meet guests at the airport and transfer them to the boat, and land-based divers usually stay in Puerto Ayora on Santa Cruz or in the main town on San Cristobal.
Visitors pay a national park entrance fee and need a transit control card before flying out to the islands, and the rules and amounts change, so check current entry requirements with official sources and your operator before you book. Leave a buffer day on the mainland if you can. Boats leave whether your connecting flight is on time or not.
Planning tips
- Certification and experience: Advanced Open Water (or equivalent) and real experience in current and cold water are sensible minimums for liveaboards, and many operators ask for a minimum number of logged dives. A few cold-water or drift dives before the trip will make a big difference.
- Nitrox: Widely available on liveaboards and worth it. Many dives are in the 15-30 metre range, several times a day, and nitrox gives you more bottom time and a little more margin.
- Dive insurance: Essential. The islands are remote and evacuation is complicated, so make sure your policy covers diving, the depths you will do and evacuation.
- SMB and signalling: A surface marker buoy is non-negotiable here. Current can carry you a long way from the boat. Many divers also carry an audible signal and an electronic locator, and some boats provide them.
- Reef hook: Useful on some current dives, but follow the guide's briefing on whether and how to use one at each site.
- Exposure protection: A 7mm wetsuit and hood for the cool season or the west, and 5mm as a minimum otherwise. Being cold makes you tired, uses more air and makes you a less safe diver.
- Torch: Helpful for looking into cracks and overhangs, and for bringing back colour on deeper rocks.
- No-fly time: Wait at least 18 hours after repetitive dives or multi-day diving before flying, and that includes the hop back to the mainland. Plan your last dive day around your flight, not the other way round.
Booking your trip
Galapagos dive liveaboards fill up early, especially for the cool-season whale shark months, so it is worth looking well ahead. You can browse the full range of Galapagos routes on LiveAboard.com.
Why I recommend LiveAboard.com
I've worked on liveaboards for 13 years. I've booked through LiveAboard.com many times, and so have a lot of my guests. They don't sponsor Fins and they don't see what we write. Here's why I point people to them:
- The biggest choice of boats. In most of the places we dive, they list more boats and departure dates than anyone else, so you can compare everything in one place.
- You don't pay more. Booking through them doesn't cost more than booking with the boat directly, and you get some of the most competitive prices around.
- Service that actually helps. They answer questions quickly and help with the planning before your trip and with anything that comes up after it.
If you're not sure which boat or itinerary is right for you, they're a great place to start: compare liveaboards in Galápagos.
Before you go: get Fins
Know what you're looking at. Fins is a marine life ID app built by divers. Before your trip, use it to get to know the animals you're likely to meet. After each dive, identify what you saw from a photo, or answer a few simple questions if you didn't get a shot, and keep it all in your dive log. Download Fins before you fly.
Before you fly, it's worth learning to recognise the different Galapagos sharks, from scalloped hammerheads and Galapagos sharks to silky and whitetip reef sharks, so that when something big comes out of the blue you know what you saw and are not just describing a shape at the dive briefing.
FAQ: diving the Galapagos
Is Galapagos diving suitable for beginners?
Mostly not, at least on the liveaboard routes. Wolf and Darwin need experience in strong current and cold water, but newer divers can enjoy some of the calmer land-based day dives around the central and eastern islands.
When is the best time to see whale sharks in the Galapagos?
The cool season, roughly June to November, with many sources putting the best chances at Wolf and Darwin between about July and October. Sightings are never guaranteed.
Can you dive Wolf and Darwin from land?
No. Wolf and Darwin are far from the inhabited islands and are only reached on dive liveaboards.
How cold is the water in the Galapagos?
It varies a lot by season and region. Expect cool-season temperatures somewhere around 16-24C and warmer water in the warm season, with the west usually coldest all year. A 7mm wetsuit with a hood is the usual recommendation for the cool season.
Where will I see hammerhead sharks in the Galapagos?
Wolf and Darwin are the best places, with scalloped hammerheads commonly encountered there throughout the year. They are sometimes reported at central and eastern sites too, but much less reliably.
Do I need nitrox for the Galapagos?
It is not required, but it is strongly recommended. Repetitive dives at moderate depths over a week make nitrox a sensible way to extend bottom time and increase your safety margin.
The Galapagos rewards divers who show up prepared: warm enough, experienced enough and ready to recognise what swims out of the blue. Get to know the cast before you go, and log every encounter as it happens. Download Fins and take it with you to the islands.
