Gordo Banks, Cabo San Lucas: Offshore Seamount Pelagic Dive

Gordo Banks is an offshore seamount, or more accurately, a pair of deep pinnacles rising from the seafloor off the coast of San José del Cabo, near Cabo San Lucas. The site’s topography, an underwater mountain reaching within diveable depths, acts as a magnet for open-ocean life. Getting there involves a boat ride, which is generally calm but can be exposed to ocean swell, especially during certain seasons. Once you're at the site, the dive unfolds in blue water, often with the main features of the seamount remaining deep below.

The seamount itself starts around 30 meters (100 feet) and drops from there, making this a deep dive from the outset. You’ll typically begin your descent over the deeper sections, keeping an eye on the blue for larger animals. The site's reputation hinges on these pelagic encounters, which are less about exploring a coral garden and more about being a part of a larger, dynamic ecosystem. The dive here is often a drift, moving with the prevailing currents over and around the seamount structure.

This is a prime location for observing hammerhead sharks (Sphyrna lewini), which are frequently seen in groups. While individual sightings are common, divers have reported groups exceeding 50 individuals, circling the seamount's upper structure. Silky sharks are also regular visitors, often accompanying the tuna and wahoos that school around the banks. These pelagic sharks and fish are the primary draw, making each dive a different experience as you never know what the ocean currents will bring.

Beyond the sharks, the pelagic diversity at Gordo Banks includes manta rays (Manta birostris), mobula rays, and whale sharks (Rhincodon typus), particularly during their migratory seasons. Humpback whales (Megaptera novaeangliae) and dolphins (Tursiops truncatus) are also observed in the vicinity, sometimes close enough to the dive site to be a focus during the surface interval. While the soft corals like black coral and wire coral provide some habitat on the seamount, the main action is in the open water surrounding it.

Visibility here is generally excellent, allowing for clear views of the schools of jacks and snappers that gather closer to the seamount's structure. These schools provide a food source that attracts larger predators, completing the food chain. The constant movement of water over the seamount continually brings in nutrients, supporting this concentration of marine life and making it a vital feeding ground in the region.

Diving Gordo Banks means understanding you're in open water, far from sheltered coves. The conditions can shift; while you might start in calm conditions, the ocean swell can build. Maintaining good buoyancy control is crucial for managing your depth during a drift dive and for ascending slowly from deeper profiles. Your focus here will be scanning the blue, anticipating what the currents might deliver into view.

What sets Gordo Banks apart is its consistent draw for significant pelagic activity in an offshore environment. It's a site where you truly dive in the blue, relying on good surface support and careful planning. The structure of the seamount, without strong reef development in the shallows, forces the focus on oceanic encounters. Each dive is a chance to interact with transient species, making it a different experience every time you descend.

The journey back to Cabo San Lucas can take around 1.5 hours, so prepare for the transit time. The beauty of offshore seamounts like Gordo Banks is that they are dynamic environments, always offering a different picture depending on the time of day, the season, and the specific currents. This constant change is what keeps divers coming back, knowing there's always something new to encounter in its waters.