Casa del Mundo - Lake Atitlan

Foggy Shark Cave is one of those Sydney sites that really delivers when conditions line up. Dropping over the edge where those two cliffs meet, you’ll find the cave itself at about 18 metres. It’s not a deep penetration, more of an overhang really, but that’s where the action is. From March to June, it's a reliable spot for gray nurse sharks. We’ve noticed more juvenile gray nurses sticking around through summer lately, which is a welcome bonus. The real trick here is timing your dive around slack tide; otherwise, you're fighting a pretty decent push. Visibility averages 11 metres, but on a good day, when the sun's high, the light filtering in makes the whole place glow with blues and greens. Look out into the blue for bronze whalers cruising past, and keep an eye on the cave floor for spotted wobbegongs tucked into the sand. This site suits experienced divers comfortable with surge and keeping an eye on their air.

Location
Lake Atitlan, Guatemala, Central America
Coordinates
14.735300, -91.212100
Type
cave
Maximum Depth
25-40m

Best Time to Dive in Lake Atitlan

The warmest water temperatures in Lake Atitlan occur in January, averaging 28.4°C. The coolest conditions are in December at 28.4°C.

Monthly Water Temperatures

  • January: 28.4°C (air: 17.9°C)
  • February: 28.4°C (air: 18.3°C)
  • March: 28.4°C (air: 18.7°C)
  • April: 28.4°C (air: 19.2°C)
  • May: 28.4°C (air: 19.4°C)
  • June: 28.4°C (air: 18.7°C)
  • July: 28.4°C (air: 19.3°C)
  • August: 28.4°C (air: 19.2°C)
  • September: 28.4°C (air: 18.9°C)
  • October: 28.4°C (air: 18.8°C)
  • November: 28.4°C (air: 18.3°C)
  • December: 28.4°C (air: 17.8°C)

Nearby Dive Sites in Lake Atitlan

Nearest Dive Centres to Casa del Mundo

Marine Life in Lake Atitlan

Home to 2 recorded species including 1 other, 1 reef fish.

Notable Species

Recommended Packing List for Casa del Mundo

Based on average water temperature of 28.4°C.

  • Shorty or Rashguard - warm 28°C water needs minimal exposure protection
  • Mask - essential for every dive
  • Fins
  • BCD - buoyancy compensator
  • Regulator - your most safety-critical piece of gear
  • Dive Computer - tracks depth, time, and NDL
  • Surface Marker Buoy (SMB) - essential for boat pickups
  • Dive Torch - useful for crevices and colour at depth
  • Underwater Camera - capture your diving memories

Frequently Asked Questions

What is the typical diving depth at Casa del Mundo and what can divers expect to see there?
At Casa del Mundo, divers can typically explore down to a maximum depth of 18m. You can expect to discover small fresh-water reefs scattered along the steep cliffs. A unique highlight is being able to put your hand in the sandy bottom at the base of the volcano and feel the heat.
How challenging is diving at Casa del Mundo, and is it suitable for beginners?
Diving at Casa del Mundo is rated as intermediate difficulty. While the maximum depth is 18m, its classification as a "cave" dive type suggests it may not be suitable for absolute beginners. Divers should have appropriate training and experience for intermediate conditions.
What are the water conditions like at Casa del Mundo, including visibility and temperature?
The water conditions at Casa del Mundo offer an average visibility of 4m. While the lake is described as deep and clear, specific water temperatures are not provided. However, a unique feature is being able to feel the heat in the sandy bottom at the base of the volcano.
What specific marine life or unique underwater features can be found when diving Casa del Mundo?
When diving Casa del Mundo, divers will encounter small fresh-water reefs scattered along the steep cliffs. The most unique underwater feature is the ability to put your hand in the sandy bottom at the base of the volcano and feel the heat. For more general information on fresh-water ecosystems, you can visit our wildlife database.
Are there any special certifications required to dive at Casa del Mundo due to its high altitude?
The provided data for Casa del Mundo does not specify any special certifications required due to high altitude. However, given its "intermediate" difficulty and "cave" dive type, divers should ensure they possess appropriate certifications and experience for such conditions. Always consult with local dive operators for specific requirements.
What is the best time of year or day to dive at Casa del Mundo for optimal conditions?
The provided information for Casa del Mundo does not specify the best time of year or day for optimal diving conditions. For general guidance on planning your dive trips, please refer to our When to Dive resource. We recommend checking with local dive operators for current conditions and seasonal recommendations.