Taam Ja’ Blue Hole (TJBH)

Researchers have discovered the world’s deepest blue hole, called Taam Ja’ Blue Hole (TJBH), in Mexico.

About Taam Ja’ Blue Hole (TJBH):

• It is located in Chetumal Bay on the Yucatan Peninsula, southeast Mexico.
• It has a staggering depth of 1,380 feet (420 meters), making it the deepest blue hole recorded.
• Initially identified in 2021 with an estimated depth of 900 feet, it now holds the world record.
• TJBH surpasses the previous record holder, Sansha Yongle Blue Hole, by 480 feet.
• The structure of TJBH is circular with steep conical sides, featuring biofilms, limestone, and gypsum ledges.
• Its geology includes discontinuous terraces and steep vertical slopes.
• The environment within the blue hole shows variable salinity and temperature.

About Blue Holes:

• Blue holes are underwater sinkholes or vertical caves located in coastal karst regions.
• They are formed by the dissolution of limestone or carbonate rocks by acidic groundwater.
• Ocean water seeps through cracks, dissolving minerals which contribute to the formation of sinkholes.
• Over time, these formations can grow significantly large due to continuous erosion and dissolution processes.
• Examples of other notable blue holes include:
  • Great Blue Hole, Belize (410 ft)
  • Dean’s Blue Hole, Bahamas (663 ft)
  • Red Sea Blue Hole, Egypt (328 ft)
  • Dragon Hole, South China Sea

Ref: Source