Few places in the world tell such an inspiring story of marine revival as Cabo Pulmo National Park. Once a depleted fishing ground, today it thrives as one of the most biodiverse marine parks in the Americas, often referred to as the “Aquarium of the World.” Located along the eastern coast of Baja California Sur, this UNESCO World Heritage Site is a haven for divers seeking pristine reefs, massive schools of fish, and encounters with sharks, rays, and whales.
As a diver, stepping into Cabo Pulmo diving feels like traveling back in time, to what oceans must have looked like centuries ago—untouched, teeming, and alive with motion.
Best Dive Sites in Cabo Pulmo
Cabo Pulmo National Park has several renowned dive sites, each offering a unique experience. Some are ideal for beginners, while others cater to more advanced divers.
Dive Site | Depth Range | Highlights | Suitable For |
---|---|---|---|
El Bajo | 15–30 m | Large schools of jacks, bull sharks | Advanced divers |
El Islote | 10–18 m | Sea lions, reef fish, playful encounters | All levels |
Los Morros | 12–25 m | Rays, turtles, reef formations | Intermediate divers |
El Vencedor | 12–17 m | Shipwreck, groupers, macro life | All levels |
La Esperanza | 20–30 m | Hammerhead sharks (seasonal), pelagic fish | Advanced divers |

Marine Life in Cabo Pulmo
What makes Cabo Pulmo diving legendary is its marine biodiversity. Over 800 species have been recorded here, from small reef dwellers to massive pelagics. Among the highlights:
- Schools of jacks (bigeye trevally) forming tornado-like swirls around divers.
- Seasonal bull sharks and occasional hammerhead sharks.
- Graceful manta rays and eagle rays.
- Resident sea lions, curious and playful around snorkelers and divers alike.
- Green and hawksbill turtles gliding over the reefs.
- During winter, humpback whales can be heard singing in the background of dives.
Simply put, the marine life in Cabo Pulmo is a living reminder of what healthy oceans can look like.
Best Time to Dive Cabo Pulmo
Diving is possible year-round, but conditions vary significantly depending on the season.
Season | Water Temp (°C) | Visibility | Highlights |
---|---|---|---|
July – Oct | 27–30 | 20–30 m | Warm waters, best visibility, vibrant reefs |
Nov – Jan | 23–26 | 15–25 m | Shark encounters, whale songs underwater |
Feb – Apr | 21–24 | 10–20 m | Cooler waters, migrating rays and whales |
May – Jun | 25–28 | 15–25 m | Transition season, fewer crowds |
Most divers consider July to October the best time to dive Cabo Pulmo, but those seeking shark diving often plan trips between November and January.
Diving Conditions
The diving conditions in Cabo Pulmo are varied, making it accessible for beginners but also rewarding for advanced divers. Depths range from shallow reefs at 10 meters to deeper walls and pelagic zones at 30 meters. Currents are usually mild but can occasionally be strong at outer sites.
Water temperatures shift dramatically—from a balmy 30°C in late summer to a refreshing 21°C in spring. A 3–5 mm wetsuit is typically recommended, with thicker protection during the colder months.
Water conditions in Cabo Pulmo can vary depending on the time of year, and it is worth understanding what to expect. Visibility ranges from 15 to 30 meters during the dry season, offering crystal-clear views of massive schools and pelagic visitors. Currents can occasionally be strong, especially around sites like “El Bajo” and “Los Morros,” so divers should be comfortable with drift conditions. That said, there are also sheltered areas where newer divers or snorkelers can still enjoy the vibrant reefs close to shore. Many operators recommend at least an Advanced Open Water certification to fully explore all the best dive sites in Cabo Pulmo, though beginners will also find suitable options under professional guidance.
Beyond diving, part of the magic of Cabo Pulmo lies in its remote and rustic setting. This is not a place filled with large resorts or bustling nightlife. Instead, you’ll find small eco-lodges, sandy roads, and a tight-knit community that lives in harmony with the natural world. After a day of diving, evenings here are quiet, with skies painted by stars untouched by city lights. It’s a reminder that visiting Cabo Pulmo is not just about underwater exploration, but also about embracing a slower, more intentional way of traveling.

National Park Cabo Pulmo
The true magic of Cabo Pulmo National Park lies not only in its beauty but in its history. In the 1980s, overfishing had nearly destroyed the reefs. The local community, realizing what was at stake, banned fishing and pushed for marine protection. In 1995, Cabo Pulmo was declared a national park, and since then, biomass has increased by over 400%, making it one of the most successful marine recovery projects in the world.
One of the most fascinating aspects of Cabo Pulmo National Park is not only the richness of its underwater world, but also the remarkable conservation story that made this marine sanctuary possible. Just a few decades ago, the local community of Cabo Pulmo relied heavily on fishing, and the reefs were nearly depleted. By the early 1990s, marine biologists recorded alarming declines in fish populations and coral health. Instead of watching their environment collapse, the families of Cabo Pulmo made the radical choice to stop fishing altogether and push for protection of their coastal waters. In 1995, their efforts paid off, and Cabo Pulmo was declared a National Marine Park. Today, it stands as a global example of how community-driven conservation can restore ecosystems to levels once thought impossible.
For divers, this conservation success is not just a story to admire—it is something you can literally see and experience on every dive. Descending into Cabo Pulmo diving sites, you are immediately surrounded by the results of decades of protection: schools of jacks moving like silver tornadoes, reefs covered in both hard and soft corals, and healthy predators patrolling the blue. Unlike many dive destinations where coral bleaching or overfishing has left scars, Cabo Pulmo feels like a time capsule of the ocean as it once was. Every dive here carries the sense of being part of a living, thriving marine miracle.
Cabo Pulmo Baja California
This transformation has turned Cabo Pulmo into a global example of how marine conservation and community action can bring an ocean back to life.
Cabo Pulmo National Park diving is more than an adventure—it’s a chance to witness nature’s resilience. Every dive here is a testament to what happens when people choose to protect instead of exploit, allowing the sea to flourish once again.
For divers seeking an authentic experience, far from commercial resorts and into the heart of the Sea of Cortez diving, Cabo Pulmo offers the ultimate reward: immersion in a living marine sanctuary that will stay with you long after you surface.
perhaps the most powerful reason to visit Cabo Pulmo National Park is its role as a living classroom. Divers, conservationists, and travelers alike leave the park inspired, realizing what is possible when humans choose protection over exploitation. In a world where many coral reefs are struggling to survive, Cabo Pulmo offers hope and proof that ecosystems can bounce back if given the chance. Every dive is not only an adventure but also a lesson in resilience—an invitation to witness one of the ocean’s greatest comeback stories.