Source: TOI
Context:
About Blue Holes:
| Information | |
| The blue hole is the second deepest marine sinkhole or cavern discovered in Chetumal Bay, off the coast of the Yucatan Peninsula in Mexico | |
| Colour | Dark blue, caused by the high transparency of water and bright white carbonate sand |
| Water Circulation | Poor, commonly anoxic below a certain depth |
| Sea Life | An unfavourable environment for most sea life can support large numbers of bacteria that live off sulfur compounds |
| What are Blue Holes | They are large, undersea vertical caves or sinkholes found in coastal regions. |
| Karst formation | Blue Holes are found on coastal karst platforms around the world. They are formed by the dissolution of soluble rocks such as limestone, dolomite, or gypsum |
| Deepest Blue Hole | Dragon Hole (Longdong) in the South China Sea |
| Overall Largest Blue Hole | Great Blue Hole, located 100 kilometres from the coast of Belize, is 300 meters wide and 125 meters deep |
