Mouthfill
Equalize to unlimited depth.

Learn to freedive to unlimited depth! This is the highest level class in recreational freediving.
Equalize to unlimited depth.
Freedive with half empty lungs to prepare your body for the pressure of much greater depths.


This class takes place at the best spot for deep freediving in all of California, Lake Berryessa. With depth accessible only a few minutes swim from shore, in calm water that is over 80 degrees in summer, you'll learn advanced freediving skills in close-to-perfect conditions.
A freediving certification from any major agency (eg AIDA, Molchanovs, PADI, SSI, FFI, etc), plus experience freediving in open water.