Scientists have yet to reach the bottom of the Taam Ja' Blue Hole in Mexico's Chetumal Bay, which new measurements hint could be connected to a labyrinth of submarine caves and tunnels.

Researchers have found a blue hole they say is the deepest in the world — and they’ve yet to find where it bottoms out. The formation is the Taam Ja’ Blue Hole in Mexico’s Chetumal Bay, and it has so far been measured to 1,

They were rolling in the deep. Scientists have identified what could potentially be the “deepest known blue hole” in the world, extending so far down that the bottom has not yet been reached. Researchers described how the underwater abyss’s extensive depths could harbor a “biodiversity to be explored” in a recent study published in the journal Frontiers in Marine Science.

In the depths of Mexico's Chetumal Bay lies a natural wonder that has captured the attention of scientists and adventurers alike: the Taam Ja' Blue Hole. Recent findings published in Frontiers in Marine Science have unveiled the astonishing depth of this underwater cavern,

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.

The largest blue hole in the world, called Taam Ja', is located in Chetumal Bay off the coast of Mexico. Blue holes are massive underwater sink holes that can span the length of skyscrapers.