The invasive non-native carpet sea-squirt, Didemnum vexillum, or D vex for short, has been found in a sea loch on the west coast of Scotland.
This is a highly invasive colonial sea-squirt originally thought to be from Japan. It forms large colonies which can grow at extraordinary rates and smother structures and habitats, generally making life difficult for all sea users – human, plant or animal. The recent discovery in a loch north of Oban is the most northerly confirmed report in the UK, and it may be that climate change is affecting its habits. Click on the following sentence to access the full story.