The deepest blue hole on Earth plunges over 400 meters into a narrow bay in the Yucatan Peninsula. And oceanographers haven’t even found the bottom yet. Taam Ja’ Blue Hole took over the title of the world’s deepest blue hole — an underwater sinkhole — on April 29,

Initially thought to be the world's second deepest, researchers now say the Taam ja' blue hole is 480 feet deeper than they first believed.

Blue holes are considered an "oasis" for marine life – but the Taam Ja' Blue Hole off the coast of Mexico remains largely mysterious.

Blue holes are biodiversity hotspots enabling marine biology research, conservation, and ocean health assessment.

In a groundbreaking discovery, explorers and scientists have unveiled the world's deepest known blue hole located off the coast of Mexico's Yucatan Peninsula. This extraordinary natural phenomenon, plunging deeper into the Earth's crust than any previously recorded blue hole,

Taam Ja’ Blue Hole (TJBH), is located in Chetumal Bay off the Yucatan Peninsula and it is estimated to be at least 1,380 feet (420 metres) below sea level. This makes TJBH the deepest known underwater sinkhole in the world.