About Santa Maria Bay
Santa Maria Bay is a renowned, shallow dive site nestled along one of Los Cabos' most famous coastlines, situated in Baja California Sur, Mexico. Located within the protective embrace of the Los Cabos corridor, this bay distinguishes itself with a unique underwater landscape, often described as a vibrant coral garden, offering a different topography compared to other marine park areas nearby. The site features a maximum depth of 18 meters (59 feet), making it widely accessible for divers of varying experience levels. Entry to the site is typically by boat, leading to a consistently sheltered environment. Submerged, divers explore gentle rock formations interspersed with colorful, thriving coral patches, which create essential habitats for diverse marine life. The overall configuration supports relaxed exploration, serving as a popular location for initial underwater experiences and skill development, including PADI Open Water Diver certifications. Encounters with marine life include frequent sightings of pelagic rays, white-tip reef sharks, spotted eagle rays, and sea turtles. Divers exploring the rocky crevices can often spot lobsters. The bay also hosts snapper, angelfish, seahorses, eels, and nudibranchs, alongside various corals and sea fans. Due to its naturally protected status, the bay typically offers predictable and favorable underwater conditions, with minimal surface chop and current. Divers can expect a comfortable and engaging experience, often making multiple dives here.
Highlights
Season calendar
Nov – Apr (Peak)
Socorro season open (Nov–May) for giant mantas and hammerheads. Cozumel bull sharks Dec–Mar. Cenotes excellent year-round. Best overall conditions.
May – Oct (Transition & Sea of Cortez)
Socorro closing, Cozumel still good. Whale sharks arrive at Isla Mujeres Jun–Sep. From August, the Sea of Cortez comes alive: Midriff Islands offer massive sea lion colonies and schooling mobulas. September and October bring world-class diving around La Paz and Cabo Pulmo with whale sharks, hammerheads, and bull sharks on the Explore Baja route.
Dive site facts: Santa Maria Bay
- Depth
- 12–18 m
- Current
- No current
- Entry
- Shore / dayboat
- Level
- Beginner
- Dive type
- Reef, Reef
- Region / port
- Mexico
- Coordinates
- 22.9022° N, 109.8080° W
Conditions & Currents
Santa Maria Bay typically experiences consistently predictable and favorable underwater conditions due to its naturally protected status. Currents are generally mild, and surface chop is often minimal, making it an ideal site for relaxed exploration and divers of all certification levels. Entry is typically achieved via boat, allowing for a direct descent into the sheltered environment. Visibility generally ranges from 9 to 18 meters (30 to 60 feet) during the cooler winter months (January to May) and can extend to 15 to 45+ meters (50 to 150+ feet) during the warmer summer season (June to December). While thermoclines are not specifically mentioned for this site, the significant water temperature shifts between seasons (20-24°C / 68-75°F in winter, 27-32°C / 80-90°F in summer) suggest potential stratification depending on the time of year. These calm and clear conditions make the site suitable for less experienced divers and offer a comfortable setting for underwater photography.
Why dive Santa Maria Bay from a liveaboard?
Santa Maria Bay is one of Mexico's signature dive sites. A liveaboard sleeps you on the water and puts you in the water for three to four guided dives per day, including dawn and night dives that day-boat operators rarely offer. You skip the daily commute back to port and reach quieter, less-crowded sites in the same region on a single trip.
Below are the liveaboards that include Santa Maria Bay on their Mexico itineraries.
Liveaboards diving Santa Maria Bay
These liveaboards may visit Santa Maria Bay on selected itineraries, the exact dive sites depend on departure, weather and conditions.

Nautilus Explorer
Mexico

Valentina
Mexico

Rocio del Mar
Mexico

Nautilus Under Sea
Mexico

Nautilus Belle Amie
Mexico

Quino del Mar
Mexico

Nautilus Gallant Lady
Mexico
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