Look up: Free-diving

1. 
   Free-diving
   `Free-diving` is any of various aquatic activities that share the practice of breath-hold underwater diving. Examples include breathhold spearfishing, freedive photography, apnea competitions and, to a degree, snorkeling. The activity that garners the most public attention is `competitive apnea`, an extreme sport, in which competitors attempt to attain great depths, times or distances on a single breath without direct assistance of an underwater ...
   Found on http://en.wikipedia.org/wiki/Free-diving
   
   
2. 
   Freestyle skydiving
   `Freestyle skydiving` is a competitive skydiving discipline where one member of a two-person team performs acrobatic manoeuvres in free fall while the other one films the performance from a close distance using a helmet mounted camera. Freestyle was first performed by Deanna Kent and others for her husband Norman Kent's 1989 film `From Wings Came Flight`. It became a competitive skydiving discipline in the early 1990's and became an official FAI...
   Found on http://en.wikipedia.org/wiki/Freestyle_s