El Salvador, El Salvador
35m
9m - 26m
Boat
Experienced
Wall, Deep, Cave
Boat
35m
9m – 26m
Experienced
21% – 31%
O214% at 33m / 33%
O2Unstable Visual Ascents — Relying on wall visuals can destabilise ascents.
Gradual Depth Creep — Lack of visual bottom reference can cause unnoticed descent.
Unsignalled Downcurrents — Downcurrents can form without visible indicators.
Gradual Narcosis Onset — Narcosis may develop slowly, making self-assessment unreliable.
Task Fixation at Depth — Cognitive narrowing at depth can reduce awareness of time and ascent rate.
Increased Gas Density Breathing Load — Higher gas density at depth increases work of breathing.
Remote Silt Disturbance — Silt can be disturbed metres away from the source.
Rapid Stress Escalation — Stress can increase sharply when visibility or navigation degrades.
High Cognitive Load Navigation — Complex passages increase mental workload even on a line.
