Freediving

5 guides covering disciplines, safety, technique and current world records.

A freediver performing constant weight descent in deep blue water using long carbon fins.

Freediving disciplines: what each one tests

Learn the differences between static apnea, dynamic apnea, and constant weight freediving disciplines used by athletes since the 1960s.

A freediver performing a mouthfill equalization at 40 meters depth in Koh Tao waters.

freediving · 10 min

Frenzel equalization for freedivers

Master Frenzel equalization to move past the 20m barrier and prepare for advanced mouthfill techniques used in deep freediving.

A freediver performing hook breathing at the water surface in Koh Tao.

freediving · 8 min

Recovery breathing after a freedive

Learn the exact 3-step sequence for hook breathing freediving to prevent shallow water blackout during deep dives.

A freediver ascending toward the sunlight in blue water, showing the transition from depth to surface.

freediving · 10 min

Shallow water blackout: the killer near the surface

Learn why shallow water blackout kills even pros. We examine the physics of PpO2 drops during the final 10m of ascent based on safety protocols used since 2015.

A freediver descending vertically in deep blue water with a long rope line.

freediving · 10 min

Current freediving world records (2026)

An analysis of the 2026 freediving world records, including Alexey Molchanov's depth milestones and current CMAS and AIDA discipline limits.