Located just 15km (9 miles) north of the English border, the reserve now extends from the Hurkar Rocks at Eyemouth to St. Abbs Head and includes 7km (4.5 miles) of coastline and out to the 50 metre (165ft) depth contour.
Unlike the scientific findings that there are now recognized several different species of killer whale (orca) there is only one distinct species of basking shark, despite their wide ranging distribution.
More recently, the sheltered bay of Scapa Flow was the base of the British Naval Fleet over several generations and indeed has served the nation well during the Napoleonic War and the American War of Independence.
The final resting places of six German U-boats sunk in the final months of the Second World War's greatest naval conflict have finally been identified.
Four of the submarines were found in completely different locations than expected.