You may be cave diving in north-central Florida this weekend after all. As of today, most of the region’s popular cave systems are either open or about to open. The only exceptions are Devil’s Eye and Ear, and (possibly) Little River. And, according to Ginnie’s Facebook page, they are shooting for opening this coming Tuesday, September 26.
Few topics seem to generate more confusion among divers and instructors than Respiratory Minute Volume, better known as RMV, and Surface Air Consumption rate, commonly referred to as SAC rate. This article will tell you what you need to know in simple, easy-to-understand language.