The Secret Trail of Tierra Bomba: The Sea Turtle Nest Route

The Hidden Side of Tierra Bomba: Beyond the Crowded Beaches

Most tourists who arrive in Cartagena only know Tierra Bomba for the boats full of people and reggaeton blasting at Playa Blanca. But the island has a secret that few take the time to discover: a trail of sand and mangrove that leads to one of the most authentic experiences in the Colombian Caribbean. I'm talking about the Sea Turtle Nest Route, a walking tour that connects you with pure nature and the work of local communities that, for years, have fought to protect these creatures. Don't expect hammocks or cocktails. This is sweat, sand in your shoes, and the thrill of watching a hawksbill turtle lay its eggs under the full moon.

In June 2026, the nesting season is at its peak, and if you're looking for something truly worthwhile in Cartagena, away from the walls and the historic center, this trail is your best bet. Here I'll tell you everything you need to know to experience it without messing up.

How to Get There: The Boat Ride and the Walk

Getting to Tierra Bomba from Cartagena is relatively easy, but the trail is not signposted like any other tourist attraction. That's part of its charm. The journey starts at the Muelle de la Bodeguita, in the historic center. There you'll find boats heading to the island from approximately 7:00 a.m. to 4:00 p.m. The trip takes between 15 and 25 minutes, depending on sea conditions. The price per person is around $15,000 to $25,000 COP (reference prices for June 2026), and it's best to pay in cash, because card machines don't always work at the dock.

Once in Tierra Bomba, you disembark on the main beach of the town, in front of the church. From there, you walk towards the southern side of the island, following the coastline. The trail is not paved: it's compact sand, rocks, and in some sections, mangrove roots. You need closed-toe shoes, preferably old sneakers or water shoes with thick soles. Flip-flops won't work; they'll hurt your feet and you'll end up turning back. The total walk, from the town to the main nesting area, is about 3 kilometers, which takes 40 minutes to an hour, depending on your pace and photo stops.

If you don't want to go alone, there are local operators certified in marine conservation who offer guided tours. I recommend looking for the Asociación de Pescadores Artesanales de Tierra Bomba (ASOPESCAT) or asking at Señora Marta's store, right next to the town's soccer field. They know every corner of the trail and know exactly where the active nests are without disturbing the turtles.

The Turtle Sanctuary: Seasons, Nests and Rules for Responsible Observation

The beach where turtles nest in Tierra Bomba is not the same one where tourists swim. It's a strip of sand further south, surrounded by dry vegetation and with stronger waves. Four species arrive here every year between May and November: the hawksbill turtle (Eretmochelys imbricata), the green turtle (Chelonia mydas), the loggerhead turtle (Caretta caretta), and, to a lesser extent, the leatherback turtle (Dermochelys coriacea). The hawksbill is the most common in this area, and it is also the most threatened by the trade in its shells.

The key moment is at night. Turtles come out of the water when it gets dark, between 8:00 p.m. and 4:00 a.m., to dig their nests and lay between 80 and 120 eggs each. Seeing this live is impressive, but there are strict rules that local guides will repeat to you until you're tired:

• Do not use white flashlights or camera flashes. White light disorients turtles and makes them return to the sea without laying eggs. If you need to see, use flashlights with a red filter or red light.
• Keep your distance. Never get closer than 5 meters to a turtle on the beach. If it feels threatened, it will abandon the nest.
• Do not touch the eggs or the nests. The eggs are extremely fragile and any movement can kill the embryo. Also, human scent can attract predators like raccoons or dogs.
• Walk silently and without sudden movements. Turtles have a limited visual field, but they are sensitive to vibrations.

During the day, the trail is also worth it. You can see the marks in the sand left by the turtles as they crawl, and community volunteers explain how they identify active nests. There is even a small monitoring station where they keep a record of each nest, with temperature and humidity data. It's real scientific work, done by locals who learned from marine biologists at the University of Cartagena.

Practical Tips: Necessary Gear and Best Times of Day

This is not a trip to improvise. The sun in Tierra Bomba is relentless, and there is no shade for a good part of the trail. Here's what you absolutely must bring:

• Biodegradable sunscreen. Common sunscreens with oxybenzone and octinoxate damage corals and marine life. In Cartagena you can buy brands like "Sun Bum" or "Raw Elements" at health food stores in the center, or ask at the town pharmacy for mineral sunscreen. If you can't find any, wear long-sleeved clothing with UV protection.
• Plenty of water. Bring at least 1.5 liters per person. There are no stores on the trail. In the town of Tierra Bomba they sell bottles, but at inflated prices.
• Closed-toe shoes with non-slip soles. I already said it, but I'll repeat it: flip-flops are the enemy of this trail. There are sections with sharp rocks and crabs that can pinch your toes.
• Natural insect repellent. Mosquitoes come out at dusk, and dengue is no joke on the Caribbean coast. Use repellent based on citronella or eucalyptus.
• Hat and sunglasses. UV radiation here is high even on cloudy days.

The best times to do the trail are early in the morning (between 6:00 a.m. and 9:00 a.m.) or late in the afternoon (after 4:00 p.m.). At midday the heat is unbearable and the turtles are not active. If your goal is to see the nocturnal spawning, coordinate with a local guide to arrive at the meeting point before 7:00 p.m. and prepare to wait in silence until a turtle appears. Not every night has activity, but the guides know which beaches are most likely based on the lunar phase and tides.

Community Impact: How Local Initiatives Protect the Species

What makes this trail special is not just the nature, but the people. For years, the fishermen of Tierra Bomba saw turtles as a source of meat and eggs. But since 2018, a group of them, supported by the Fundación Tortugas del Caribe and the Mayor's Office of Cartagena, started a conservation program that today is an example in the region. They patrol the beaches every night during the nesting season, mark the nests with stakes and protective nets, and relocate eggs that are in risky areas (such as near the high tide line) to a controlled hatchery.

As a visitor, your presence helps. Guided tours pay a fee that goes directly to the community park rangers, who are the same fishermen who used to hunt turtles. You can also contribute in other ways:

• Do not buy turtle shell products (combs, earrings, decorations). In Cartagena they are sold at the Bóvedas market, but they are illegal and encourage trafficking.
• Report any nest in danger to the guides or to the Port Captaincy of Cartagena. If you see someone bothering a turtle, report it immediately.
• Donate to the Fundación Tortugas del Caribe or sponsor a nest for $50,000 COP. They send you photos and data on the incubation process.

A curious fact that few know: in Tierra Bomba, hawksbill turtles have a hatching success rate of 78%, well above the global average of 60%. This is due to constant monitoring and the fact that the beach has little light pollution, something the locals take care of by turning off the lights of nearby houses during full moon nights. It's a collective effort that deserves respect.

Frequently Asked Questions

Is it safe to do the trail alone, without a guide?

It is possible, but not recommended. The trail is not marked and it's easy to get lost among the mangroves. Also, local guides know the exact turtle schedules and have permits to access restricted nesting areas. If you go alone, you risk stepping on a nest without realizing it or running into fishermen who are not familiar with tourism. Better to pay for the guide, which costs between $30,000 and $50,000 COP per person, and support the community.

What is the best time of year to see sea turtles in Tierra Bomba?

The nesting season runs from May to November, with a peak between June and August. Hawksbill turtles are most active during these months. If you want to see the hatchlings emerge from the nest and run to the sea, that occurs between July and December, about 50 to 60 days after laying. New moon nights are ideal because there is less natural light and adult turtles feel safer to lay their eggs.

What do I do if I find a stranded or injured turtle on the beach?

Do not touch it or try to return it to the water. Stranded turtles may be sick, dehydrated, or have internal injuries. The best thing to do is call the Fundación Tortugas del Caribe hotline (ask in the town for the number, which changes every year) or notify the local guide. They are trained to handle these cases. In the meantime, cover it with a damp towel to keep it cool and keep it away from dogs or curious people.

Historical or contextual introduction

Tierra Bomba is an island with history, often overlooked by visitors who only focus on the busiest beaches. Originally, it was a strategic point during the colonial era, used by the Spanish to protect the city of Cartagena from pirate attacks. The fortifications, remnants of that past, can still be found on the island, offering a glimpse into its military and commercial importance in the Caribbean.

In addition to its military history, Tierra Bomba is home to diverse communities that have kept their traditions alive over the years. This includes artisanal fishing and the production of cocadas, a typical sweet that can be found at small stalls on the island. Getting to know the locals and learning about their customs is an experience not to be missed.

For those seeking a more authentic experience, venturing onto the trail that leads to the sea turtle nests is essential. This path not only offers the opportunity to observe the island's natural beauty, but also to learn about the conservation efforts being carried out to protect these endangered species. Turtles come to Tierra Bomba to nest, and the local community has organized to protect their eggs and ensure the hatchlings have a chance to survive.

Finally, if you decide to visit Tierra Bomba, consider going early in the morning or at sunset, when the light is perfect for photos and there are fewer tourists. It is also advisable to bring water and some food, as restaurants can be far away and are not always open. This way you can enjoy a full day of exploration and connection with nature and local culture.

Things to do

Visit the Tierra Bomba Island Flora and Fauna Sanctuary

This sanctuary is an ideal place to observe the marine and terrestrial biodiversity of the region. You can take guided walks and learn about the conservation of local species. Insider Tip: Bring binoculars for bird and turtle watching, and don't forget your camera to capture the beauty of the landscape.

Explore the Beaches of Tierra Bomba

Unlike Playa Blanca, the beaches of Tierra Bomba offer a quieter and more authentic atmosphere. You can enjoy a sunny day, swim in crystal-clear waters, and savor typical dishes at the small beach bars you find. Insider Tip: Ask for the fried fish of the day; it's a local delicacy you can't miss.

Participate in Sea Turtle Conservation

During the nesting season, there are opportunities to join sea turtle conservation efforts on the island. You can be part of the nighttime monitoring patrols and help protect the nests. Insider Tip: Find out about the dates and how you can join these activities with local conservation groups.

Walk the Turtle Nest Trail

This trail takes you through the natural habitats where turtles nest. It's an educational experience that also connects you with nature. Insider Tip: Visit at dawn or dusk to enjoy the best light and avoid the heat of the day.

Where to eat or drink

La Playita

This small restaurant offers an authentic experience with fresh seafood dishes. The specialty is the shrimp ceviche, which is always a hit with visitors. Additionally, the relaxed atmosphere and sea view make it an ideal place to enjoy a good meal after a day exploring the island.

Insider Tip: Don't miss the "Arroz con Coco" they prepare here; it's a perfect side dish for any seafood plate. Arrive early to get a table with a sunset view.

Restaurante El Cielo

This restaurant, run by chef Juan Manuel Barrientos, fuses the best of local cuisine with modern techniques. Its menu changes regularly, but there are always delicious options that highlight the flavors of the region. The dining experience is unique and worth every penny.

Insider Tip: If you have the chance, try the tasting menu. Be sure to make a reservation in advance, especially during the high season.