Let's see...breathing for like 30 minutes off a pen-sized tank...emerging from a full wet suit with a perfectly pressed tuxedo underneath...the Bond movies were always a bit silly, but their take on diving has always been far-fetched
If you think they were silly in relation to diving, you should have sympathy for us water skiiers. That scene in Licence to Kill when Timothy Dalton shoots the seaplane's pontoon with a speargun, barefoot waterskiis for a few hundred yards holding the cable, and then somehow overtakes the plane to grab a pontoon and clamber aboard... aye caramba. Seriously willing suspension of disbelief.