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Grading Cave Restrictions - InDEPTH Cave cartographer Rory O’Keefe decided to propose a new system of measurement-based restriction grades to increase map accuracy.

Under the Tutelage of Cave Explorer Parker Turner - InDEPTH Alton Hall shares his story of learning to cave dive in the 1980s under the tutelage of cave explorer and pioneer Parker Turner.

Cenotes on the Edge—Preserving Mexico’s Underwater Heritage - InDEPTH We offer a sobering update on the state of the Yucatán Pennisula, post-Tren Maya, conducted by Stratis Kas with three Yucatán-based diving instructors/ explorers and a local environmentalist.

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Decompression Theory: Are We Any Closer to the Truth? David Doolette, Jarrod Jablonski, Mark Powell and Simon Mitchell examine decompression theory, risk, gradient factors and what comes next.

T-REB CCR: Inside the Sidemount Rebreather’s Design Inside the T-REB CCR: Andrzej Pałucha explains its sidemount architecture, low work of breathing, bailout role, testing and evolution.

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Cave Survey Data Management: Who Owns the Data? Cave survey data management is changing. Skanda Coffield-Feith examines SpeleoDB, version control, collaboration, privacy, and preservation.

Mentorship in Diving: How Community Shapes Better Divers No diver develops alone. Jarrod Jablonski explores mentorship, community, friendship and the accumulated knowledge behind diving development.

Dive Professional Liability Insurance: Are You Really Covered? Dive professional liability insurance is more complicated than it looks. Maritime attorney Alton J. Hall, Jr. explains the exclusions and risks.