I saw some fish, but most of my time was spent learning about dive-boat protocol. The Germans have the best kit, take up more space on the boat and float better. The Brits are very friendly with the Germans and are careful not to mention the war or recent football internationals. In return, the Germans don't mention David Beckham or the Dome. American divers can be overconfident and amuse everyone by using too much weight while underinflating their BCs on entry.
Turkish divers have gills.
They chat among themselves about technical subjects and about their considerable exploits. There are lots of experienced divers who will help you avoid elementary mistakes like taking off your BC in the water before your weights. Everything is 25 per cent bigger under water except barracuda, which are 75 per cent bigger each time the story is told. No diver on holiday can understand why anyone ever dives in UK waters. Everyone has either been to, or is going to, the Maldives or the Red Sea, and have special T-shirts to prove it.