5 deep records that every scuba diving instructor should know

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First published in 2007, the Diving Almanac celebrates the achievements of a unique group of people that share a passion for underwater adventure and discovery. It is the ultimate authority on diving exploits, history and personalities.

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The records chapter presently showcases over 650 amazing underwater feats and firsts by humans, machines and animals. If you are looking for the world’s deepest diver, fish or submersible, they’re all here.

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Jumping the gun on scuba records

The Internet has become a treasure trove of misinformation and propaganda where anyone with a mobile device can add to the ever-expanding sea of hoopla with no concern for accountability... and the diving community is no exception.

About the editor

Jeffrey Gallant, M.Sc., started diving in 1982. As a scientist and educator, he has led diving missions all over the world. He is also an aquanaut, an award-winning photographer, and he has appeared in many documentaries and media productions.

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EDITION 5.4 | 54 MB

World's clearest water at Silfra, Iceland. Go to the Oceanography section in the Records chapter. Photo © Jeffrey Gallant | Diving Almanac

EDITION 5.4 | FALL 2016 | 304 PAGES | 54 MB

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1. Deepest dive on scuba [Ocean | Men] PAGE 1 OF 6

332.35 m (1,090 ft) - Ahmed Gabr (Egypt), Dahab, Egypt, September 18, 2014. Time to descend was 12 minutes. Total ascent time including decompression was just under 15 hours. Ahmed Gabr is a diving instructor and an Egyptian special forces officer.

2. Constant weight without fins AIDA [CNF | Men] PAGE 2 OF 6

101 m (331.36 ft) - William Trubridge (New Zealand), Dean’s Blue Hole, Bahamas, December 16, 2010. CNF is considered by many to be the most challenging freediving discipline because the diver must descend and ascend on a single breath or air without any assistance (no weighted sled, fins or lift bag).

3. Deepest submersible dive [Ocean] PAGE 3 OF 6

10,916 m (35,814 ft) - Bathyscaphe Trieste (Project Nekton) - 23 January 1960, Challenger Deep (Mariana Trench), Guam. Hydrostatic pressure: 16,000 PSI (1,089 ATM). Occupants: Dr Jacques Piccard (Switzerland), Lt. Donald Walsh, USN. The deepest known point on earth is 10,994 meters (36,070 feet).

4. Deepest saturation dive [Experimental] PAGE 4 OF 6

701 m (2,300 ft) - COMEX diver Theo Mavrostomos (Greece), Hydra X (10), COMEX Hyperbaric Experimental Centre, Marseille, France, 1992. The record during which the diver breathed a gas mixture of hydrogen, helium and oxygen inside a hyperbaric chamber took 43 days to complete.

5. Deepest fish [Observed] PAGE 5 OF 6

10,916 m (35,814 ft) - During his record dive aboard the bathyscaphe Trieste on January 23, 1960, Jacques Piccard reported seeing a sole-like flatfish on the seafloor at the deepest known spot in the world, the Challenger Deep. Download your free copy of the Diving Almanac to read the full story.

The Diving Almanac & Book of Records PAGE 6 OF 6

Learn about these deepest of feats and hundreds more diving records, diving personalities, and 6,000 years of diving history by downloading the 100% FREE PDF digital edition of the Diving Almanac & Book of Records to your computer or mobile device today!