Category Archives: Ocean Health

44. A discussion on decompression theory, Diving Against Debris, and Your Next Dive takes you to Cayman Brac



Decompression theory is the study and modeling of how inert gas gets from our lungs to our body and then how it is released from our body. All decompression models have evolved from the work by John Scott Haldane. Haldane introduced the concept of tissue compartments that take on nitrogen at different rates called half-times. … Continue reading 44. A discussion on decompression theory, Diving Against Debris, and Your Next Dive takes you to Cayman Brac


43. PADI Rescue Diver, Chasing Coral and Sea Hunt – It’s Still Alive goes Cave Diving



The PADI Rescue Diver course is an extremely challenging and rewarding evolution. Our course consisted of knowledge development – done through a thorough and comprehensive electronic learning, a review of that material through a virtual meeting, an intense pool session to demonstrate and practice rescue exercises and the open water practical scenario. The class also … Continue reading 43. PADI Rescue Diver, Chasing Coral and Sea Hunt – It’s Still Alive goes Cave Diving


42. Regulator Pressure Discussion, Learn about the Coral Restoration Foundation, and another pioneer of the underwater world – Ed Link



Regulator pressure is a critical component of your regulator maintenance. Every year you should have your regulator’s pressures checked and adjusted whether you are having an inspection or overhaul. The intermediate pressure (IP) of the first stage should be within manufacturer specification which is normally between 125 and 150 PSI. If you have an unbalanced … Continue reading 42. Regulator Pressure Discussion, Learn about the Coral Restoration Foundation, and another pioneer of the underwater world – Ed Link


41. Scuba Air Quality, Project AWARE Week 2020, Your Next Dive – Coco View Resort, Roatan



Scuba air quality is imperative in diving. Scuba grade air must adhere to the Compressed Gas Association (CGA) standards. The standard for scuba is Grade E and outlines the limits for contaminants in that air. Ensuring that your air meets these standard uses a three prong approach. The compressor must have routine maintenance, proper filtering … Continue reading 41. Scuba Air Quality, Project AWARE Week 2020, Your Next Dive – Coco View Resort, Roatan


39. Fen Johnson Part 3 – FENJOHN Company and the equipment he offered plus a discussion on World Ocean Observatory



ER Fenimore Johnson had a company named FENJOHN that build and sold underwater photography equipment along with a wide array of scuba diving equipment. The company was based out of Ardmore, PA. The 1954 catalog featured the FENJOHN Bantam 16mm underwater motion picture camera for the hefty price of $1990 ($19,010 in 2020 dollars). By … Continue reading 39. Fen Johnson Part 3 – FENJOHN Company and the equipment he offered plus a discussion on World Ocean Observatory