# Snorkeling in Costa Rica: The Best Spots on Both Coasts > Costa Rica's best snorkeling is at Isla del Caño off the Osa Peninsula, Tortuga Island in the Gulf of Nicoya, sheltered coves in Guanacaste, and the Caribbean reefs at Cahuita and Manzanillo. Most good spots are reached by boat, and calm, dry spells bring the clearest water. Many sites are in protected areas with their own rules, so a guided trip is the easy way to go. Source: https://sportfishing-costarica.com/snorkeling-in-costa-rica/ Last checked: 2026-11-14 Top boat trips: Isla del Caño, Tortuga Island, Catalina Islands by catamaran Caribbean reefs: Cahuita National Park, Manzanillo From shore: Some Guanacaste coves, Cahuita's Playa Blanca, Punta Uva and Manzanillo on calm days Clearest water: Calm, dry spells; Pacific usually clearer December to April Rules: Snorkel only in marked areas in parks; don't touch or stand on coral ## What to expect Snorkeling in Costa Rica is about fish, turtles and the odd shark more than about bright coral gardens. On the Pacific side, cool, food-rich water feeds big schools of reef fish, rays, puffers, angelfish and white-tip reef sharks, but it also makes visibility change from day to day. The Caribbean side has true coral reefs, best seen on calm days. Most of the best spots are reached by boat, and many are in national parks or reserves with their own rules. That's why most visitors snorkel on a guided tour: the operator knows where conditions are good that day and handles the permits. ## The best spots **Isla del Caño (South Pacific).** Our pick for the best snorkeling in the country. This small island 16 km off the Osa Peninsula is a biological reserve, and SINAC describes its coral reefs as among the largest and best preserved on the Pacific coast. Boats leave from Drake Bay, Sierpe and Uvita, every group needs a registered guide, and visits must be booked and paid in advance. See our guide to [Isla del Caño](/isla-del-cano/). **Tortuga Island (Gulf of Nicoya).** A pair of islands with white-sand beaches and rocky reefs, visited on day trips from Puntarenas, Jacó, Montezuma, Tambor and Paquera. Expect reef fish, puffers and rays around the rocks. Small operators such as [Montezuma Crew](/montezuma-crew/) run private boat days with snorkel stops, and our [Montezuma guide](/adventures-montezuma/) covers the area. **Guanacaste coves and the Catalinas.** Sailing catamarans from Playas del Coco, Flamingo, Potrero and Tamarindo stop at sheltered coves along the coast, and some go out to the [Catalina Islands](/a-superb-dive-point-in-catalina-island/). Water clarity here varies a lot with the season and the wind. See our [sailing guide](/sailing-in-costa-rica/) for the catamaran towns. **Marino Ballena National Park (Uvita).** This marine park is known for the sandbar called the Whale's Tail and for humpback whales in season. Boat tours from Uvita include snorkel stops around the park's rocks and islands. **Cahuita National Park (Caribbean).** Cahuita was created to protect what its official park map calls the most important coral reef in Costa Rica, about 600 hectares of it. Snorkeling is allowed only in marked areas, and Costa Rica's tourism board recommends hiring a local guide. Most visitors join a boat snorkel tour from the village of Cahuita. Don't stand on or touch the coral. **Punta Uva and Manzanillo (Caribbean).** South of Puerto Viejo, the beaches at Punta Uva and Manzanillo have reefs close to shore that you can sometimes snorkel from the beach on calm days. Manzanillo sits inside the Gandoca-Manzanillo wildlife refuge. If you're fishing out of Puerto Viejo, see our guide to [sportfishing in Puerto Viejo](/sportfishing-in-puerto-viejo-de-talamanca/). ## When to go - **Pacific.** The dry season, roughly December to April, usually brings the calmest seas and clearest water, especially in the south. Heavy rain in the wet months sends muddy river water into the sea near shore. In Guanacaste, upwelling early in the year can cool the water and turn it greener. - **Caribbean.** Visibility depends on calm seas and little rain. Local operators often point to September and October, and to a window around March and April, as good times, but conditions vary from year to year, so ask when you arrive. ## Tips - **Go with a guide** in parks and reserves. At Isla del Caño it's required, and at Cahuita it's recommended. - **Hands off.** Don't touch, stand on or kick coral, and don't feed or chase animals. Park rules ban all 3. - **Use reef-friendly sun protection.** A rash guard or long-sleeve swim shirt beats slathering on sunscreen, and protects your back on long floats. - **Check the current.** Ask the guide about currents before you jump in, and stay near the boat or the group. - **Bring your own mask** if you have one that fits. Rental masks are often the weak link. - **No single-use plastic** at Isla del Caño; bring a reusable water bottle. If snorkeling hooks you, our [scuba diving guide](/scuba-diving-in-costa-rica/) covers the next step. ## Frequently asked questions ### Where is the best snorkeling in Costa Rica? Isla del Caño off the Osa Peninsula is usually rated the best. Tortuga Island, Cahuita and Manzanillo are good alternatives. ### Can I snorkel from the beach? In a few places, on calm days: Cahuita's marked areas, Punta Uva and Manzanillo on the Caribbean, and some sheltered coves in Guanacaste. Most good sites are reached by boat. ### When is the water clearest? On the Pacific, usually in the dry season from about December to April. On the Caribbean, calm, dry spells matter most; many locals point to September and October. ### Do I need a guide at Cahuita? Snorkeling is allowed only in marked areas, and the tourism board recommends a local guide. Most visitors go on a guided boat trip.