Photo copyright Joe Ryan.
Divers Decompressing on the Shot Line, Scapa Flow, UK
Dive Scapa Flow by Lawson Wood. Read our review...
Dive Scapa Flow by Rod Macdonald, Paperback, 176 pages (1998)
The Bull & The Barriers - The Wrecks of Scapa Flow by Lawson Wood, 2001, Tempus Publishing, Hardback.
The Underwater Photographer: Digital and Traditional Techniques by Martin Edge, Paperback, 536 pages (2009)
Adobe Photoshop for Underwater Photographers by J & S Drafahl, 224 pages (2007).