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Blue hole
Taam Ja' Blue Hole
Chetumal Bay, Mexico
No public photo available
Measured at more than 420 m in 2024, it is the deepest known blue hole on Earth.
40 m
420 mRecreational limitBathymetry and profile
A sinkhole with steep sides of about 80°, which opens out from 4.6 m in a shallow bay. Probes did not reach the bottom and found layers of warmer, saltier water.
Dashed line: 40 m recreational diving limit
Features
- Deepest known blue hole
- Its name means 'deep water' in Maya
- May be connected to the open sea through caves
Specific fauna
- Shallow seagrass life at the rim
- Bacteria at depth (being studied)