Mexico

Dive Site: Santa Maria Bay

12–18 mBeginner Reef
© EsriSource: Esri, Maxar, Earthstar, GIS Community · Labels © Esri, HERE, Garmin, FAO, NOAA, USGS

Which liveaboards dive Santa Maria Bay?

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

Vibrant coral garden topographyFrequent pelagic ray encountersWhite-tip reef sharksSpotted eagle raysResident sea turtlesLobster hideouts in rocksAccessible shallow reef system

Season calendar

Best months to dive here
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Excellent
Good

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 liveaboard at Santa Maria Bay

Nautilus Explorer

Mexico

25 guests45 m
Valentina liveaboard at Santa Maria Bay

Valentina

Mexico

20 guests38 m
Rocio del Mar liveaboard at Santa Maria Bay

Rocio del Mar

Mexico

20 guests34 m
Nautilus Under Sea liveaboard at Santa Maria Bay

Nautilus Under Sea

Mexico

19 guests32 m
Nautilus Belle Amie liveaboard at Santa Maria Bay

Nautilus Belle Amie

Mexico

32 guests45 m
Quino del Mar liveaboard at Santa Maria Bay

Quino del Mar

Mexico

20 guests36 m
Nautilus Gallant Lady liveaboard at Santa Maria Bay

Nautilus Gallant Lady

Mexico

12 guests35 m

Dive sites similar to Santa Maria Bay

Same character, same waters, six more sites divers love for the exact same reasons.Compare seasons, access and liveaboard routes, then pick the site that fits your trip best.
© EsriMaxar, Earthstar, GIS

The Agustín Melgar, also known as the C-54, is a 56-meter (185-foot) former minesweeper that rests on a sandy bottom at 24 meters (80 feet) south of Puerto Escondido within the Loreto Bay National Park.

Suitable for
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Current
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Access
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Depth
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Theme
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Arco Iris

Costa Rica

Arco Iris, or "Rainbow" in Spanish, is a prominent dive site located near Brumel Island (Penahuaste), approximately 8km north of Playa Potrero in Costa Rica.

Suitable for
Beginner
Current
Moderate
Access
Dayboat
Depth
9–30 m
Theme
Reef
© EsriMaxar, Earthstar, GIS

Bahía de La Paz serves as the capital of Baja California Sur and the primary gateway to the Sea of Cortez, a region famously dubbed the "world's aquarium" by Jacques Cousteau due to its exceptional biodiversity.

Suitable for
Advanced
Current
Mild
Access
Dayboat
Depth
17–27 m
Theme
Big animals / Reef
© EsriMaxar, Earthstar, GIS

Bahía de los Ángeles, nestled in the northern Sea of Cortez, is a remarkable dive destination primarily known for its seasonal aggregations of whale sharks.

Suitable for
Intermediate
Current
Moderate
Access
Liveaboard only
Depth
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Theme
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© EsriMaxar, Earthstar, GIS

Bajo Alcyone

Costa Rica

Bajo Alcyone, a submerged seamount near Cocos Island, stands as a world-renowned dive site.

Suitable for
Advanced
Current
Strong
Access
Liveaboard only
Depth
25–40 m
Theme
Drift / Seamount
© EsriMaxar, Earthstar, GIS

El Bajo, often referred to as Bajo de la Ballena, is a prominent seamount situated approximately eight miles northeast of La Paz, Mexico.

Suitable for
Advanced
Current
Strong
Access
Liveaboard or dayboat
Depth
18–35 m
Theme
Pinnacle

7 liveaboards run the Santa Maria Bay route.

Three to four guided dives a day on Santa Maria Bay and the other signature sites in Mexico, sleeping right above the reef.