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The Sea of Cortez ranks as a global hammerhead hotspot due to its seamounts and nutrient-rich currents that draw massive scalloped hammerhead schools for seasonal gatherings. Unlike crowded sites elsewhere, remote pinnacles like El Bajo offer uncrowded drifts amid cleaning stations and prey fish. Declines from overfishing make sightings precious, with conservation efforts restoring hope.
Prime dives cluster around La Paz at El Bajo for schools of hundreds, Gordo Banks near Cabo for silky mixes, and shallower Los Islotes blending sharks with sea lions. Liveaboards unlock overnight pinnacles; day boats from La Paz hit multiple sites. Whale sharks and mobula rays amplify pelagic action.
Dive August-October for cool waters and peak schools, facing 3-5 knot currents, 80-130 foot depths, and 75-82°F temperatures. Prepare with nitrox for longer bottoms times and strong buoyancy control. Operators enforce no-touch rules to protect sharks.
Baja's dive community, led by outfits like Pelagios Kakunja, champions shark stewardship amid fishing pressures, sharing 50-year sighting data to guide conservation. Local crews from La Paz infuse trips with tales of historic aggregations, fostering respect for these nurseries. Join post-dive beach bonfires for diver camaraderie.
Book dives 1-3 months ahead through operators like Pelagios Kakunja or Fun Azul Fleet, prioritizing liveaboards for multi-day El Bajo access during August-October peaks when sharks school thickest. Check weather forecasts for calm seas, as storms disrupt open-water sites. Advanced Open Water certification ensures eligibility for deep drift dives.
Rent gear from dive shops to avoid airline weight limits, but pack personal mask, snorkel, and reef-safe sunscreen. Acclimatize to 75-82°F water with 3mm wetsuits; motion sickness meds counter boat rides and currents. Secure dive insurance covering evacuation from remote seamounts.