Sirena Biological Station
Along the southwestern coast of the Osa Peninsula, inside of Corcovado National Park, is where you'll find the Sirena Biological Station (Estacion Biologica Sirena). Unquestionably one of the most rugged and extreme areas in the country, Sirena provides the ideal location to witness amazing biodiversity. All it takes is a phone call to the park headquarters in Puerto Jimenez to reserve your spot in this amazing wilderness.
The modestly priced facilities can accommodate around 20 people. Those who get priority include scientists and researchers, so it pays to reserve ahead of time. Check with the Puerto Jimenez park headquarters for current information on the park and Sirena availability. Lodging, camping, water and restrooms are all available at the Sirena Biological Station.
Those who do get the opportunity to stay in Sirena and explore Corcovado have one of the wildest frontiers at their doorstep. Allow plenty of time for discovery, as the park deserves at least 2-3 days, if not more. All the ranger stations in the park are linked by a web of trails that provide access to the area&s most scenic natural beauty and the opportunity to see the wildlife that the park is known for. Included are all five cat species found in Costa Rica, monkeys, crocodiles, sloths, peccaries, giant anteaters and tapirs. Birders should have an excellent shot of observing some of the 400 species of birds that have been recorded in the area, including the rare harpy eagle and Costa Rica's largest population of the magnificent scarlet macaw.
The sole highway (245) which twists and turns its way around the Osa Peninsula eventually ends in Carate, directly east of Sirena. There are two small airstrips in Sirena and Carate. Local flights depart regularly from many of the favorite destinations in Costa Rica's South Pacific region.
Sirena Biological Station itineraries from local insiders
Explore hand-picked Sirena Biological Station itineraries designed by local insiders who know every hidden corner. Each trip is completely flexible, customized to your pace, travel style, and budget.
On the Road to Pura Vida
Emmett & Bridgette explored Costa Rica’s diverse landscapes on an extensive self‑drive adventure. From Corcovado’s rain‑soaked forest and Cabo Blanco’s coastal cliffs to Rio Celeste’s cloud‑forest, they hiked, kayaked mangroves, and floated down turquoise rivers. Friendly local guides shared conservation stories, letting both leave with a deeper respect for Costa Rica’s wild heart and its sustainable rhythms.
Our Endless Summer Days
Anywhere.com allowed us to truly enjoy our experience vs. worrying that things weren’t arranged properly. Our 11-day adventure through Costa Rica yielded rich experiences and fond memories.
Experiences in Sirena Biological Station
Explore hand-picked Sirena Biological Station tours and experiences led by local insiders, from wildlife encounters to cultural deep-dives.
Sirena Deep Exploration 2 days 1 night
Corcovado National Park Tour - Sirena Station
La Sirena Station Corcovado National Park One Day Tour
Where to stay in Sirena Biological Station
From boutique lodges to luxury resorts, every Sirena Biological Station accommodation is hand-picked by our local insiders for location, comfort, and character.
Luna Lodge
Luna Lodge is a secluded eco-lodge set in the pristine and fascinating Osa Peninsula. Within the 700 sq. miles of the Osa Peninsula, a staggering 2.5% of the worlds total biodiversity is contained. Home to the Corcovado National Park, the Osa Peninsula is one of the most bio-diverse places on Earth and has become known as the premier eco-tourism destination in Costa Rica.
LagunaVista Villas
LagunaVista Villas puts you a short distance from Corcovado National Park, in the wild rainforest of the Osa Peninsula. Private decks have views of the surrounding rainforest, as well as the beach and the nearby lake.
Danta Corcovado Lodge
Set in the South Pacific region, Danta Corcovado Lodge is a family-run farm with lodging options on the Osa Peninsula. Danta Corcovado Lodge offers creatively designed accommodations in a rainforest setting 8 km from Corcovado National Park and with close proximity to the Guaymi Indigenous Reserve.
Casa Drake Lodge
Built and run by a Costa Rican family as part of Los Planes’ sustainable development, Casa Drake Lodge is centrally located on a large, forest filled land at the edge of Corcovado National Park in the South Pacific region.
Jade Mar Cabins
Located in the South Pacific, Jade Mar Cabins overlooks Drake Bay on the north end of Osa Peninsula. World renowned for its biodiversity, Drake Bay is a hub for excursions to the local reserves where visitors can enjoy the rich diversity of flora and fauna.
Casa Horizontes Corcovado
Situated on the rugged Osa Peninsula, Casa Horizontes B&B is only a ten-minute walk from the town of Drake Bay. The Osa Peninsula is Costa Rica’s most southerly extension, and has a multitude of outdoor adventures for visitors to enjoy. One of the major draws to the area is Corcovado National Park, a natural reserve that is home to the largest expanse of lowland tropical rainforest in Central America. The wildlife and biodiversity that has made Costa Rica famous abound in Drake Bay, and visitors come here to experience the exotic tropical ecosystem that dominates the area.
Pirate Cove Hotel
Pirate Cove Hotel lies along the Osa Peninsula in one of Costa Rica's most biologically diverse locations - Drake Bay. For the avid nature lover or the outdoor adventurer, a visit to Drake Bay is the trip of a lifetime, promising encounters with some of the world's most fascinating plant and animal species.
Hotel Jinetes de Osa
Hotel Jinetes De Osa is situated in the isolated town of Drake Bay on the northern end of the Osa Peninsula, part of Costa Rica's idyllic Puntarenas province. Due to its relative inaccessibility, Drake Bay offers visitors the chance to see a wild and supremely beautiful part of the country. The area has remained in pristine condition and is the image incarnate many would conjure up when thinking of a tropical paradise.
Cabinas El Mirador
Cabinas El Mirador Lodge is situated on a hill overlooking Drake's Bay on the Osa Peninsula of the Pacific Coast of Southern Costa Rica. The El Mirador location is one of the untouched, raw beauty of jungles and beaches alongside exotic and endangered wildlife. Corcovado is a complete ecological treasure and an ideal spot for nature lovers and adventures.
Aguila de Osa Rainforest & Marine Adventure Lodge
Aguila de Osa Rainforest & Marine Adventure Lodge blends adventure with serenity, offering a range of amenities for relaxation and recreation. Guests can enjoy onsite massages, complimentary wireless internet, and private patios in their guestrooms.
Drake Bay Wilderness Resort
Drake Bay Wilderness Resort is situated on the southern tip of the Osa Peninsula, in the small coastal village of Drake Bay, Costa Rica. The property lies directly on a sheltered bay that opens onto the Pacific Ocean, and it is positioned just a short drive from the entrance to Corcovado National Park. The resort’s address places it within a region celebrated for its biodiversity, making it a convenient base for guests who wish to explore both marine and rainforest environments.
Copa de Arbol
The Copa De Arbol Beach and Rainforest Resort is nestled amongst 70 acres (28 ha) of pristine rainforest reserve along the South Pacific coastline. Between Drake Bay and Corcovado National Park, this luxurious beachfront eco-resort caters to those travelers seeking an “off-the-beaten-path” rainforest and ocean experience.
Flora & fauna in Sirena Biological Station
The wildlife and plant life you might encounter in Sirena Biological Station, from iconic species to the rare finds our local insiders know where to look for.
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Insider-led Costa Rica Design & Concierge
Your insider team designs the trip around what you care about, then supports you in-country with private logistics, vetted partners, and concierge help when plans change.
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