I have been looking for information about the relationship between the dry static max breath hold and the max depth that can be reached and its corresponding duration. Looking throug posts I realized that actual dive time is much shorter than dry static duration, but I could not find actual numbers, except some figures posted by a few members. It its my impression that there is a significant amount of variation among freedivers regarding this issue. My main interest is hunting. In particular I would like to know what aprox. "useful" depth can be reached for dry statics of 2,3, and 4 minutes and the aprox. duration of each dive. Is there any thread dealing with that?