In this first episode I provide some background to the series, recalling how I got the bug for SCUBA diving. I share my first experiences diving with the Penzance Sub-aqua Club in Mount's Bay and get a shock when exploring the contents of a sunken minesweeper. We'll visit a graveyard of shipwrecks on The Manacles, a set of treacherous rocks off The Lizard Peninsular, to dive on the immense wreck of the steamship Mohegan, which sank in 1898.