page_title: Outline of underwater diving
section_title: Underwater diving, by environment
hierarchical_section_title: Outline of underwater diving / Diving activity, by type / Underwater diving, by environment
caption_attribution_description: This is a picture of myself, taken with my camera, during ice diving in the St. Lawrence river on February 24th, 2004.
context_page_description: The following outline is provided as an overview of and topical guide to underwater diving:
  Underwater diving – as a human activity, is the practice of descending below the water's surface to interact with the environment.
context_section_description: Underwater diving environment – The underwater environment to which a diver may be exposed
  Open-water diving – Diving in unrestricted water and in water when the diver has unrestricted vertical access to the surface
  Altitude diving – Underwater diving at altitudes above 300 m
  Cave diving – Underwater diving in water-filled caves
  Deep diving – Underwater diving to a depth beyond the norm accepted by the associated community
  Ice diving – Underwater diving under ice
  Muck diving – Recreational diving on a loose sedimentary bottom
  Night diving – Underwater diving during the hours of darkness
  Recreational dive sites – Specific places that recreational divers go to enjoy the underwater environment or are used for training purposes
  Wreck diving – Recreational diving on wrecks
caption: Ice Diving - View from the top
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