The Catalina Islands are a cluster of small rocky islets and sea stacks off the Gulf of Papagayo coast, a short boat ride from the beaches north of Tamarindo, and they are the best-known snorkel and dive sites in this part of Guanacaste. The islands are exposed to open-ocean currents, which bring nutrients and, with them, a good deal of marine life: schools of snapper and grunts, parrotfish, pufferfish, moray eels and, in the right season, rays and other large visitors that attract divers from around the country. The tour we link is a snorkelling outing leaving from the Tamarindo area, and it is designed for people who want to see the underwater world without a certification. A boat carries you along the coast, the crew provide masks, snorkels and fins, and guides lead you into the water at the best spots for the day. Visibility varies with season, tide and plankton, and some days are much clearer than others, so the operator will pick the site with the best conditions. The trip often includes a stop at a calm beach or cove for a swim, and sometimes a light meal on the boat. Because it leaves from Tamarindo, you avoid a long drive to the northern marinas, which makes it an easy half-day plan.
How it works
You book a date and departure, and the operator gives you a meeting point and time. Details such as the length of the boat ride, snacks, gear, and whether the trip includes a beach stop depend on the option you choose, so read the inclusions on the ticket and confirm them with the operator. Weather and sea conditions can change plans, and trips can be cancelled or rerouted when the ocean is too rough.
What to expect
Snorkelling in open water is different from a protected cove. There can be a current, and the boat crew will brief you on how to stay together and how to signal for help. Wear a life vest if you are not a strong swimmer, because the crew generally offer them. Expect to see a mix of fish and coral formations, and be ready for surprises: sea turtles, rays and even dolphins appear on some trips, though none is guaranteed. Photographers should consider a waterproof camera and a strap.
Making the most of it
Apply reef-safe sunscreen early or wear a rash guard, because the sun is intense on the water. Bring a towel, a hat, a light jacket for the ride and water. If you are prone to seasickness, take a remedy before boarding. The calmest sea conditions are typically in the morning, and the dry season usually offers the clearest water. If you hope to dive instead of snorkel, look at the Catalina Islands scuba diving entry, and if you want a sunset instead, the catamaran sail is a good alternative.
Good to know
Open-water snorkelling is a step up from a calm beach, and it is worth being honest about your skills. If you have never snorkelled, practise breathing through the tube in the shallows before you board, and ask the crew to stay close to you in the water.
Wearing a rash vest or a thin wetsuit protects against sunburn and jellyfish stings. Do not touch rocks, coral or marine life, avoid standing on the bottom, and take only photographs. The islands are protected marine habitat, and gentle behaviour helps keep the fish and rays coming back year after year.
What to expect
The experience
A guided boat trip from the Tamarindo area to the Catalina Islands for snorkelling over rocky reefs.
Best time
Morning departures usually have calmer seas, and the dry season tends to give clearer water.
How long
Roughly four hours, though the exact length depends on the option and sea conditions.
Tips
Use reef-safe sunscreen, take a seasickness remedy if needed and listen to the crew about currents.
Quick picks
- Best for
- Snorkellers who want open-water marine life without a diving certification.
- Families
- Good for confident swimmers aged around eight and up; confirm life jacket sizes and age limits.
- Couples
- An active shared adventure, with warm water and plenty of fish.
- Pair with
- A sunset catamaran sail on another day, or a surf lesson in town.
- Time needed
- Plan on half a day including the boat ride.
Good questions
Do I need to be a strong swimmer?+
You should be comfortable in open water. Life vests are normally available, and the crew will brief you on currents.
What will I see?+
Expect schools of fish, parrotfish, pufferfish and eels, and possibly rays or turtles. Sightings vary by day.
When is the best time to snorkel?+
Mornings tend to be calmer, and the dry season often has clearer water, but conditions can change daily.
Is the trip suitable for children?+
Older children who swim well often enjoy it, but ask the operator about age limits and life jackets.
What should I bring?+
Reef-safe sunscreen, a towel, a hat, water, a light jacket and a waterproof camera if you have one.