The Blue Hole – Dive into the Geologic Past

  • Blue Hole BelizeLocation: Lighthouse Reef Atoll 
  • Description: 3 tank dive
  • Recommended Wear: Sunshades, cap, sunblock,skinsuit or wetsuit
  • Level: Certified Divers Only
A feature attraction of Diving in Belize, especially for divers with an appreciation of geographical phenomena, is the opportunity to explore the famed Blue Hole. Part of the Lighthouse Reef System, it lies approximately 60 miles off the mainland out of Belize City. An almost perfectly circular limestone sinkhole approximately 300ft across and over 400ft deep, it boasts an array of bizarre stalactites and limestone formations from what was once the ceiling of air-filled caves before the end of the last Ice Age. When the ice melted the sea level rose, flooding the caves. The walls are sheer from the surface until a depth of approximately 110 feet where the formations actually angle back, allowing you to dive underneath monstrous overhangs. Hovering amongst the stalactites, you can't help but feel humbled by the knowledge that the massive formation before you once stood high and dry above the surface of the sea eons ago.

The temperature in the Blue Hole at 130ft is about 76F with hardly any change throughout the year at that depth. The water is motionless and the visibility often approaches 200 feet as you break a very noticeable thermocline.   Little light reaches the depths of the Hole and water does not circulate freely. As a result, the deeper areas inside the Blue Hole don't have the profusion of life associated with most drop-offs.

A rare and wonderful dive. However this is truly a technical category decompression dive, not recommended for “newbys” or resort dive qualified divers. The Blue Hole dive requires buoyancy control rather than depending on something to grasp while descending or ascending.  Decompression times are around 10 to 15 minutes at 20 feet.  Dive masters stay with you and look after you during the entire dive, which is not that long to begin with, about 30 minutes. Enjoy two other dives in the crystal clear waters teeming with marine life at Lighthouse Reef before returning home. 

For anyone who wants to dive into the geologic past, exploring the Blue Hole is guaranteed to be a rewarding experience.