Australia's Tank Cave has tan-stained walls, which is what makes this room so outstanding. The collapsed slabs of rock have revealed the internal white of the limestone. The cave's tunnels spider out in multiple directions from this room.
Tank Cave in Australia
It's called the Limestone Coast - a strip of coastline in the south east of South Australia. Do you know what limestone means? Caves!
Cenote La Concha is part of cave system Sac Actun in Mexico. It's a spectacular cave that has been scarred by deliberate vandalism by cave divers writing in the silt.
Decorated cave ceilings
Stalagtites form on the ceiling when the cave is dry and are some of the most delicate and magnificent features of an underwater cave. Cave divers must look up!
Cave diving from cenote to cenote
The Quintana Roo Speleological Survey reports that there are 187 cenotes in cave system Sac Actun in Mexico. Cave divers can hop from cenote to cenote via the cave.
Ox Bel Ha
Not all Mexican cave is smothered in speleothems. Parts of cave system Ox Bel Ha are fragile, crumbling and dissolving away.
Cenote of the Sun
Cenote of the Sun is connected to cave system Ox Bel Ha in Mexico. It is part of a chain of cenotes that includes Cenote Naharon, Cenote Mayan Blue and Cenote Jailhouse.
Cave diver snagged on the guide line. Even something as small as a drysuit pee valve is an entanglement hazard for cave divers.
Using underwater photography to look into caves
Cave diving is a sport that requires a lot of training and equipment. It's not even something that most people have an interest in doing themselves. However, many people are intrigued by what we find in underwater caves. I use my underwater photography as a portal for non-cave divers to look into caves.
This floor formation formed when the cave was dry, but may have held a pool of water. Now the cave is fully submerged and these fragile formations are enjoyed by cave divers.