Mexico's Coast Reveals Second-Deepest Blue Hole in the World

The world's second-deepest blue hole, Taam ja', has been discovered in the bay of Chetumal in Mexico, with a depth of 274 meters. The blue hole has a surface area of 13,690 square meters and features very steep sides with 80-degree slopes. It is notably deeper than the famous Great Blue Hole off the coast of Belize. Scientists plan to study the microbial diversity of the waters and understand what kind of life lives here. Blue holes were formed during the last Ice Age when sea levels were over 100 meters lower than the present-day.