The archipelago of São Tomé and Príncipe, located in the Gulf of Guinea, is not only known for its lush tropical forests and pristine beaches but also for its underwater world that mesmerizes diving enthusiasts and nature lovers alike. This destination, still relatively unknown in the tourism world, offers a unique experience of diving in crystal-clear waters teeming with marine life. In this article, we’ll explore the marine fauna you can encounter, the best times to visit, and why this is a must-see location for diving enthusiasts.Marine biodiversity: An explosion of life beneath the waves
São Tomé and Príncipe boasts a thriving marine ecosystem thanks to its warm, nutrient-rich waters influenced by Atlantic currents. This biodiversity makes every dive a unique experience.
1. Reef fish: Colorful and lively
The coral reefs surrounding the islands are home to a wide variety of reef fish, such as angelfish, parrotfish, and clownfish. These vibrant marine inhabitants bring life and color to the underwater environment, offering a visual spectacle that captivates both beginners and experienced divers.
2. Majestic predators: Barracudas and giant groupers
Among the highlights are encounters with barracudas, which often form schools patrolling the reef areas and underwater pinnacles. Giant groupers are also commonly found, impressing with their size and often resting in protected areas of the seabed.
3. Sea Turtles: Ocean guardians
São Tomé and Príncipe is an important nesting site for sea turtles, including species like the green turtle, hawksbill turtle, and leatherback turtle. If you’re lucky, you may observe them swimming peacefully among the reefs or feeding on algae and jellyfish during your dives.Pelagic species: Encounters with the giants of the sea
In addition to its rich resident fauna, the waters of São Tomé and Príncipe attract pelagic species, making this destination a unique spot for witnessing large marine life.
1. Humpback whales: A natural spectacle
From July to October, humpback whales migrate through these waters on their way to breeding grounds. You may hear their songs underwater and, if fortunate, witness spectacular breaches during a dive.
2. Whale sharks and manta rays
Although less common, divers have reported encounters with whale sharks and manta rays, especially around Rolas Island, known for its marine biodiversity and crystal-clear waters.
3. Dolphins and tuna
The archipelago’s waters are frequently visited by playful dolphins, often seen swimming near boats, and large schools of tuna—a testament to the richness of these waters.Top diving spots in São Tomé and Príncipe
The archipelago boasts numerous dive sites that stand out for their diversity and natural beauty. Here are some of the best:
1. Ilhéu das Rolas
Located south of São Tomé, this islet is one of the most famous diving spots. Its waters host a wide variety of tropical fish, corals, and rock formations that create unique underwater landscapes.
2. Bone de jockey
This site is known for the presence of large groupers and barracudas, as well as other species like moray eels and octopuses hiding among rock crevices.
3. Pedra da galé
An ideal location for more experienced divers due to moderate currents that attract large schools of pelagic fish, including tuna and jacks.Best times for diving in São Tomé and Príncipe
While diving is possible year-round, certain seasons are more suitable depending on what you wish to experience:


Marine conservation: A commitment to the future
São Tomé and Príncipe’s marine ecosystem is fragile and requires a sustainable approach to ensure its preservation. Local authorities and international organizations are working to protect this unique environment through initiatives such as:
As a visitor, you can contribute by following these recommendations:Why São Tomé and Príncipe should be on your dive list
In addition to its incredible marine biodiversity, this archipelago offers a diving experience that combines the tranquility of an uncrowded destination with the thrill of exploring virtually untouched ecosystems. Whether you’re seeking close encounters with sea turtles, the excitement of swimming alongside barracudas, or the chance to hear humpback whale songs underwater, São Tomé and Príncipe has it all.
The charm of these islands extends beyond their waters. After a day of diving, you can immerse yourself in the rich local culture, savor delicious cuisine made with fresh ingredients, and enjoy the warm hospitality of the local people.Conclusion: A marine paradise waiting to be explored
São Tomé and Príncipe is an emerging diving destination that offers a wealth of experiences for nature and diving enthusiasts alike. From colorful reefs and resident species like turtles and barracudas to unforgettable encounters with humpback whales and whale sharks, every dive is an opportunity to marvel at the richness of the Atlantic Ocean.
If you’re looking for a unique place, far from conventional tourist destinations, where you can connect with nature and enjoy sustainable diving, this African archipelago is the perfect choice. Pack your diving gear, book your trip, and come discover the underwater wonders of São Tomé and Príncipe.


