JayKeeley said:
Is that purple liquid oxygen thing real? I thought it was only used in The Abyss (read: Hollywood).
I believe it is, yeah

At least, a friend of mine who is heavily into his diving was telling me about it!
EDIT:
http://answers.google.com/answers/threadview?id=116268
Liquid breathing is in fact not science fiction, it is science fact.
Alliance Pharmaceutical Corporation manufactures Liquivent which is
used for the sole purpose of liquid breathing. This is accomplished
due to its oxygen rich content in a mix of perflourocarbons. It has
been tested on mice, and is currently in Phase 2-3 clinical (human)
testing in the United States, Canada, and Europe. More information can
be found at the links below, a couple articles on liquid breathing,
and the actual homepage for Alliance's Liquivent (which is being
developed first for medical usage, and then maybe perhaps for
industry; i.e. high pressure dives in which air breathing is not an
option). Also, from the DVD extras on the Abyss special edition (I own
it and have watched the documentary), the rat used in the scene of the
movie which you saw was an ACTUAL test of Liquivent, and not special
effects. It's quite interesting to see science fiction come to
fruition. Thanks for letting me help you with your question.