Sascha is a U.K.-based trainee staff writer at Live Science. She holds a bachelor’s degree in biology from the University of Southampton in England and a master’s degree in science communication from Imperial College London. Her work has appeared in The Guardian and the health website Zoe.
Mexico's Taam Ja' Blue Hole is the deepest known underwater sinkhole in the world, researchers have discovered — and they haven't even reached the bottom yet.
"On December 6, 2023, a scuba diving expedition was conducted to identify the environmental conditions prevailing at the TJBH," researchers wrote in a study published Monday in the journal Frontiers in Marine Science. During the expedition, the researchers took measurements with a conductivity, temperature and depth profiler — a device with a set of probes that read and transmit water properties to the surface in real time via a cable.
Blue holes are water-filled vertical caverns, or sinkholes, found in coastal regions where the bedrock is made of soluble material, such as limestone, marble or gypsum. They form when water on the surface percolates through the rock, dissolving minerals and widening cracks, which eventually causes the rock to collapse. Famous examples include Dean's Blue Hole in the Bahamas, the Dahab Blue Hole in Egypt and the Great Blue Hole in Belize.
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