Pretty in blue

Pretty in blue

Pretty in blue

Blue ringed octopus - taken under the Rye Pier Vic on a night dive. Photocomp September '06 - Open

2006-09-24

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Human Dim Sim in space - or how not to use your SMB!Human Dim Sim in space - or how not to use your SMB!
A useful safety device for most divers is the surface marker buoy. In essence it is an easily seen surface float which is connected to the diver by means of a thin, strong line, usually carried on a reel.
Underwater Card 2