If you want to know about the dive sites at St Abbs and surrounding area then these are the 3 books we recommend for you

Mike Clark
Wrecks & Reefs of Southeast Scotland
Great photos and detailed descriptions of over 30 dive sites at St Abbs including shore dives, reef dives and the famous wrecks of HMS Pathfinder and the Glenmire
Available on Amazon

Berwickshire Marine Reserve
A Guide to diving the St Abbs & Eyemouth Voluntary Marine Reserve
Photos of the local marine life and descriptions of 17 dives in and around St Abbs and Eyemouth.
A bargain from the Berwickshire Marine Reserve Shop

Lawson Wood
Dive St Abbs and Eyemouth
It’s an old one now and I could only find it second hand but dive sites don’t change that much. Describes in detail 50 dive sites from Berwick-upon-Tweed to Fast Castle