The Book "The Mammoth Book of the Deep (Jon E. Lewis, Editor, 2007)" is a compilation of ~30 excerpts (chapters) of larger vintage diving books including "The Sea Devils" by Borghese, Hidden Depths" by Tailliez, and Truk Lagoon by Silvia Earl. It’s a good read and can help you pick out the next full book to pick up.
On a non-diving note, one chapter is about a German U-boat that escaped to Argentina at the end of the war as written by the German Captain. After I read the one chapter I picked up the original book on Amazon (U-boat 977, Heinz Schaeffer, 1950). While not a diving book it is a very interesting read. I had no idea on the actual speeds involved (until the very end of the war top speed under water for a German U-boat was 3 knots) or that until just before the normal u-boat attack was done on the surface. The introduction is perfect. Just imagine a British Commander, (Nicholas Monsarrat), would write about a German U-boat captain’s book in 1950.