Dive Site: Big Momma

About Big Momma

Big Momma is a natural coral reef system located within the protected Man of War Shoal Marine Park in St. Maarten, known for its extensive coral formations surrounding a sandy seabed. This site is particularly renowned for its shark encounters, primarily Caribbean reef sharks, making it a distinctive destination for divers. Its unique topography features two large coral arches that divers can navigate through, adding an adventurous element to the exploration. The reef system supports a rich diversity of marine life, thriving in waters with excellent visibility. While sharks are a primary draw, the site also hosts a variety of large fish species, including groupers and barracudas, alongside numerous smaller reef inhabitants such as parrotfish, squirrelfish, and shrimp that find refuge within the elkhorn coral. With an average depth of 40 feet (12 meters) and generally weak currents, Big Momma is accessible to divers of all experience levels, including beginners. Dive operations often include experienced guides to ensure safety and enhance the shark diving experience. The site's proximity to other popular dive locations makes it a convenient addition to any St. Maarten diving itinerary.

Dive site facts: Big Momma

Depth

12–50 m

Current

Weak

Visibility

10–30 m

Water temperature

25–30°C

Entry

Boat

Level

All levels

Dive type

Reef, shark

Region / port

St. Maarten

Coordinates

18.0167° N, 63.0833° W

Conditions & Currents

Currents at Big Momma are generally weak, making it a suitable site for divers across all experience levels. Conditions are typically calm, which contributes to a relaxed dive experience. Visibility consistently ranges from good to excellent, often exceeding 100 feet (30 meters), allowing for clear views of the marine life and reef structures. Divers should still remain aware of their surroundings, particularly during shark encounters, and maintain neutral buoyancy to protect the delicate coral formations.

Marine life & sighting chances

Caribbean reef shark

common

Atlantic sharpnose shark

occasional

Grouper

common

Barracuda

common

Parrotfish

common

Squirrelfish

common

Shrimp

common

Honeycomb trunkfish

occasional

Scrawled filefish

occasional

Spiny lobster

occasional

Dive profile & how the dive runs

Divers typically enter Big Momma by boat, descending into an average depth of 40 feet (12 meters) where the sandy seabed meets expansive coral formations. The dive usually progresses around the large circular reef, exploring its rich marine diversity. A key feature of the site is the opportunity to swim through two enormous coral arches. Special attention is often given to areas frequented by Caribbean reef sharks. The dive concludes with a gradual ascent, with safety stops typically performed over the shallower parts of the reef or around the boat, leveraging the consistently clear visibility and generally weak currents.

Underwater photography

Big Momma offers excellent opportunities for wide-angle photography, especially when capturing the extensive coral formations and resident Caribbean reef sharks. A fisheye or wide-angle lens is ideal for showcasing the scale of the coral arches and the broader reef scape. For capturing individual sharks or larger fish like barracuda and grouper, a mid-range zoom lens is recommended. Given the exceptional visibility, external strobes can enhance color and contrast without being strictly necessary for every shot. Maintain excellent buoyancy to avoid disturbing the fragile elkhorn coral and position yourself respectfully when photographing marine life, particularly sharks, ensuring not to disrupt their natural behavior.

Combine with nearby dive sites

• The Fishbowl

  Close to Big Momma, also within Man of War Shoal Marine Park.

• Proselyte Reef

  Popular wreck and reef dive with historical artifacts.

• Carib Ghost

  Wreck site south of Cay Bay.

• Charlie's Shoal

  Seldom-dived reef outside Simpson Bay, good for open water divers.

Getting there & logistics

St. Maarten is easily accessible via Princess Juliana International Airport (SXM). Dive trips to Big Momma typically depart from ports on the Dutch side of the island, such as those near Simpson Bay or Philipsburg. Standard dive excursions are often half-day trips, combining Big Momma with another nearby site like The Fishbowl. No specific permits beyond standard dive operator bookings are mentioned, as the site is part of the Man of War Shoal Marine Park. Divers should ensure they have appropriate certification and health declarations.

Safety & environment

For dive safety in St. Maarten, a recompression chamber is available on the island, though specific details on its exact location and operational hours should be verified with local dive operators. In the event of an emergency, evacuation procedures would involve local medical services and potentially air transport to more advanced facilities if needed, underscoring the importance of comprehensive dive insurance, such as DAN. At Big Momma, while shark encounters are common and generally safe under expert supervision, divers should always follow guide instructions, maintain calm behavior, and avoid any aggressive movements. Adherence to park rules, including no touching or taking marine life, is mandatory.

Who it suits — and who it doesn't

FAQ

Big Momma FAQ

Liveaboards diving Big Momma

These liveaboards may visit Big Momma on selected itineraries — the exact dive sites depend on departure, weather and conditions.

Caribbean Explorer II

St. Maarten

18 guests

$249/day