Isla Tortuga, Costa Rica: The Ultimate Day Trip from Santa Teresa

There are places in Costa Rica that make you stop mid-sentence, look around, and think: this is real? Isla Tortuga is one of them. A uninhabited island in the Gulf of Nicoya, just a short boat ride from our coast, with white sand so fine it squeaks under your feet and water so clear you can see every fish before you even put on your mask.

I'm José Cardoza. I live in this region and I've been guiding tours to Isla Tortuga for years. Every time the boat rounds that last headland and the island appears — palm trees, white sand, turquoise water — I see the same reaction on every face. Pure wonder. ¡Pura vida!

Here's everything you need to know about the Isla Tortuga day trip, and why it belongs on your Costa Rica bucket list.

What is Isla Tortuga?

Isla Tortuga — "Turtle Island" — is an uninhabited island in the Gulf of Nicoya off the Nicoya Peninsula. It belongs to the municipality of Cóbano, Puntarenas, which is exactly where we live. The island is known for two things that are almost impossible to find together: extraordinary natural beauty and total tranquility.

No roads. No hotels. No noise except the waves, the birds, and the sound of your snorkel breaking the surface. The beaches are pristine, the forest behind the sand is dense and green, and the water is warm year-round — typically between 26°C and 30°C (79–86°F).

It has appeared on several "most beautiful beaches in the world" lists — and honestly, every time I see it from the water, I understand why.

Getting there from Santa Teresa

The tour departs from the Tambor dock (muelle de Tambor), about 40 minutes from Santa Teresa by car — we meet at the bridge by the dock. The boat crossing takes roughly 30–45 minutes depending on sea conditions, and the ride itself is part of the experience — you're gliding across the Gulf of Nicoya with the Nicoya Peninsula behind you and open Pacific horizon ahead.

What you'll do on the island

This is not a sit-and-stare tour (though you're welcome to do that too). Here's what a typical day looks like:

• Snorkeling — the waters around Isla Tortuga are rich with marine life. Parrotfish, pufferfish, angelfish, moray eels, and sea turtles (yes, actual turtles near Turtle Island) are all regular sightings.
• Kayaking — paddle along the coastline at your own pace, around rock formations and into hidden coves. The water is so clear you'll feel like you're floating on glass.
• Beach time — the main beach is long, wide, and almost impossibly white. You can walk the entire length in about 15 minutes and feel like you have the whole Pacific to yourself.
• Fresh fruit on the boat — pineapple, watermelon, and mango, served fresh. Because why not.
• Watching the wildlife — frigate birds circling overhead, pelicans diving, howler monkeys calling from the jungle edge. Costa Rica does not do ordinary.

"The water is so clear you can see 15 meters down — and what you see will take your breath away."

Is it good for snorkeling?

Yes — genuinely one of the best snorkeling spots on Costa Rica's Pacific coast. The visibility is excellent, the coral formations are healthy, and the variety of fish is remarkable for a relatively shallow reef. First-timers and experienced snorkelers both leave impressed.

If you've never snorkeled before, this is an ideal place to start. The water is calm, warm, and shallow enough to feel safe while still being full of life. I've introduced dozens of first-timers to snorkeling at Isla Tortuga, and I've never had anyone regret it.

Who is this tour for?

Honestly? Everyone. I've taken families with kids as young as four, solo travelers, couples on honeymoon, and groups of friends. The island has enough space and enough to do that everyone finds their version of a perfect day.

• Kids love the snorkeling and the kayaks — and the fish are so colorful they'll never forget it.
• Photographers get the kinds of shots that make their Instagram followers ask "wait, is that real?"
• People who just want to lie on an extraordinarily beautiful beach and do absolutely nothing: you're very welcome here.
• Anyone interested in Costa Rican nature and marine life: this is one of the best windows into it you'll find.

A word from a local guide

I've lived near this island my whole life. I've seen it in every light, in every season, at dawn and at dusk. And it still gets me every time.

What I love most about guiding this tour is watching people arrive with their phone cameras ready and leave with something they didn't expect: a sense of real calm. The island does something to you. The noise of your normal life goes quiet for a day.

That, for me, is the whole point.

¡Pura vida, mae! See you on the water.

— José