What to know about the Coral National Park of Rosario and San Bernardo, a Caribbean biodiversity gem
Deep in the turquoise waters of the Caribbean Sea, 45 kilometers from Cartagena, lies one of the most remarkable natural treasures in Colombia. The Coral National Park of Rosario and San Bernardo spans 120,000 hectares, mostly underwater, functioning like a massive natural aquarium that protects the largest coral platform in the Colombian Caribbean.
Why visit this unique marine sanctuary?
Established in 1977, this national park reveals a diverse mosaic of ecosystems. Its living coral reefs, covering 420 square kilometers, serve as the backbone of an underwater world housing nearly 3,000 marine species.
The Rosario and San Bernardo archipelagos, with their 37 islands and islets dotted with white sand, are the visible highlights of this aquatic marvel. This marine sanctuary protects not just exceptional coral formations, but also coastal mangroves, seagrass beds, and a level of biodiversity that makes it the most visited national park in Colombia.
The wonders of the coral reefs and their ecosystem
Beneath the crystal surface, a striking natural display unfolds. The coral formations create a kaleidoscope of shapes and colors where parrotfish in vibrant hues, majestic angelfish, and striped sergeant majors swim. Brain corals sit alongside sea fans in a constant aquatic ballet.
Diving and snorkeling
The calm, clear waters reveal their secrets just a few meters down. Iconic sites like El Faro, El Pargo, or La Pared offer memorable experiences for divers of all levels. The wreck of a small plane near Isla Grande, now transformed into an artificial reef, attracts exceptional marine life.
Underwater gardens by day and night
After dark, certain areas reveal a magical phenomenon. The bioluminescence of phytoplankton turns the water into a sea of blue stars. The Laguna Encantada on Isla Grande provides this enchanting display where every movement in the water triggers flashes of natural light.
The Rosario archipelago: an easy escape
The 27 islands of the Rosario archipelago stand less than an hour by boat from Cartagena. Isla Grande, the largest, draws visitors with its Playa Dulce beaches and various lodging options. Isla Cholon pulses with the rhythm of Caribbean parties, while private islands like Isla Coralina offer exclusive retreats.
A local tip: board early in the morning from the La Bodeguita dock to avoid crowds and enjoy the calmest waters. Shared boats leave between 7:00 AM and 10:00 AM, but arriving at opening time ensures a seat and a smoother ride.
San Bernardo: the wild and preserved archipelago
Further away but more authentic, the San Bernardo archipelago reveals ten islands of breathtaking beauty. Isla Mucura and Isla Tintipan stand out for their environmentally conscious ecotourism facilities and deep blue waters. Santa Cruz del Islote will surprise you as it is often cited as the most densely populated island in the world, serving as a genuine floating fishing village.
These more remote locations maintain a peaceful pace of life where time seems to slow down. The mangroves of Isla Tintipan house remarkable birdlife with over 60 bird species recorded, including 31 marine species like frigatebirds, cormorants, and pelicans.
The oceanographic experience and conservation
The Oceanario de San Martin de Pajarales (San Martin de Pajarales Oceanarium) offers an educational dive into the Caribbean marine world. Sharks, sea turtles, dolphins, and rays thrive in this natural aquarium that raises awareness about protecting fragile ecosystems. The conservation programs led by the institution contribute to preserving coral reefs against the threats of climate change and pollution.
Opening hours
*Information subject to change