Ocean care
Reef
An underwater structure or raised area that may be formed by rock, coral or other material; not all reefs are coral reefs.
Explore related lessons →PLAIN WORDS FOR AN UNDERWATER WORLD
The diving glossary.
From buoyancy to buddy briefings: 103 terms to help you understand what you’re reading, hearing and learning.
3 definitionsIntroductory edition · Review pending
Learning
Refresher
Structured review and practice intended to revisit previously learned knowledge and skills.
Explore related lessons →Equipment
Regulator
Equipment that reduces cylinder gas pressure in stages and supplies breathing gas to the diver.
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