Sidemount is a versatile diving configuration that can be used to travel through very small cave passages, where backmount configuration may not be passable.
In 2018 the Mexican underwater cave systems Sac Actun and Dos Ojos were connected. Dos Ojos was absorbed into the bigger system Sac Actun, making Sac Actun the world's longest underwater cave system.
Eden - the River Run
Cooler fresh water sits on top of warmer salt water, that intrudes into Mexico's caves from the sea. The halocline is what we call this meeting between the two bodies of water.
Sometimes the simplest cave passages are the best. There is beauty in simplicity.
Cave diving tools
Some of the tools used by GUE cave divers: the semi-closed circuit Halcyon RB80 rebreather and Suex DPV (Diver Propulsion Vehicle).
Rays of sunlight pierce the water at the height of summer. Scuba divers enjoy the Poor Knights Islands Marine Reserve.
Blue Maomao Arch by DPV
If you're a scuba diving looking to get a decent distance from A to B, a DPV is the only way to travel.