Category Archives: Scuba History

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


40. Delayed Surface Marker Buoy, Plastic Bag Laws, and Sea Hunt – It’s Still Alive – Midget Submarine



We recently incorporated the delayed surface marker buoy adventure dive in our advanced open water class. Listen to our reasoning and how beneficial this was to both our students and instructors. Being able to deploy your surface marker buoy from depth is an important skill to have. Plastic bag laws work. There are 8 states … Continue reading 40. Delayed Surface Marker Buoy, Plastic Bag Laws, and Sea Hunt – It’s Still Alive – Midget Submarine


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


38. Fen Johnson Part 2: His work with the Navy UDT and Your Next Dive takes you to Dutch Springs in Bethlehem, PA



In 1948 LCDR Fenimore Johnson again uses his expertise in underwater photography to work with the Navy’s Underwater Demolition team. The Navy doesn’t really believe that the divers can do all the things they report that they are doing. That is where Fen Johnson comes in. He will document their work using both film and … Continue reading 38. Fen Johnson Part 2: His work with the Navy UDT and Your Next Dive takes you to Dutch Springs in Bethlehem, PA


37. Who was ER Fenimore Johnson – Part One and Sea Hunt It’s Still Alive – The Defector from 1961



ER Fenimore Johnson was a pioneer in underwater photography. He was born in 1899. His father was the founder of the Victor Talking Machine Company. Fen Johnson worked for the company until it merged with RCA in 1927. Fen got involved in diving using a Miller and Dunn shallow water helmet first to clear lines … Continue reading 37. Who was ER Fenimore Johnson – Part One and Sea Hunt It’s Still Alive – The Defector from 1961