Will there ever be Cyborgs and Bionic and Aqua Men?

[Ayahuasca]

Inspired by the 'underwater city' thread - will we ever develop human gills? I mean, a way of extracting oxygen from water like fish with real, grafted-on gills? I seem to remember a comic back in the 70's had a character with secret gills. Will this ever become reality?

[Justayellowbadge]

Would you then be able to swim faster than a shark?

[Cara Van Man]

oooh God no.

Imagine swimming around and seeing yesterdays poo float past. Yuk.

Worse still, seeing JAYBs poo from yesterday. Double yuk.