Britain is an island nation so, unsurprisingly, scuba diving is a popular British pastime enjoyed by some 50,000 keen participants and just as many of the armchair variety. A carefully-structured programme of training ensures that the British diver is well--prepared for the challenging conditions which may be encountered beneath our seas. Or does it? How many trainee divers were taught about the perils of high-speed testicular trauma during descent? Or the dangers of having sex in a tent with a deaf person? Why bacon should be in your first aid kit. How to build a space shuttle using salvaged...