Name: Poor-man's Weather-glass
Scientific name: Laminaria saccharina
Category: Marine plants
Nature Stars: 40
About: A common 'kelp' seaweed, grows around the low-water mark, attached to rocky shores up to 20 metres deep.
How to identify: A large 'kelp' seaweed, dark browny green, with a single broad frond up to 4 metres long, with a crinkly, wavy edge.
Where: Common on rocky shores all around our coasts.
Fantastic fact: Kelp is traditionally used to forecast the weather: if it dries up, the weather will be fine. If it swells up and becomes damp, rain is on its way.
Photograph credit: Badalley