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Underwater - Sub Aqua

Submarine and underwater resources

Simply Scuba

Testing of watches down to a depth

Fish

Boston Sub Aqua Club

Aquarium

Tanya Streeter
The famous Olympic freediver with "You can do it!" spirit!
(Interviewers have stopped asking Tanya to hold her breath for six minutes on shows, because although she can do this, they can't fill in the time with chit-chat for that long!)

British Society of Underwater Photographers

Underwater? Also see Underground

The speed of sound is four times as fast in water as it is in air. There are other reasons why there's seldom mention of supersonic submarines.

More items of a sub-aquatic nature will be added soon!

More URLs and contacts round the world required!