Into the Deepest and Darkest

Joseph Emmanuel has been a technical diver and instructor for more than 14 years and a member of two teams of extreme deep/cave divers for most of that time.
From the Foreword:
"Fourteen minutes to descend, thirty-one decompression stops to look forward to. My first decompression stop was at 190 metres my first support diver only met me at 120 metres. I had to endure twelve hours and twenty minutes of decompression in rough seas. In the end I had done something no one else ever had. I’d dived...