Common dolphins were once rare in the Hebrides , preferring warmer water . But their numbers have risen by 68 per cent over the last 12 years . The Scottish Government has been working with local authorities to try and protect them from further damage caused by climate change - but it is not clear how much of a difference this will make for them. Hebridean Whale and Dolphin Trust is recruiting volunteers for monitoring .
Common dolphins were once rare in the Hebrides , preferring warmer water . But their numbers have risen by 68 per cent over the last 12 years . Scientists believe this could be due to the waters warming by 0.5°C . Hebridean Whale and Dolphin Trust is recruiting volunteers for monitoring .