Scientific name: Enteromorpha intestinalis
Category: Marine plants
Nature Stars: 20
About: A common seaweed of rock pools, saltmarshes and sea water ditches. Up to 75cm long. Pale green, often with bubbles of air trapped inside.
How to identify: Pale green inflated tubes, with pinched-in 'waists' along its length. Looks a bit like intestines.
Where: All around our coasts
Photograph credit: George Paterson