Here’s another new-to-me seaweed, which the British beachcombers amongst you have probably seen many many times already, as it’s very common and found all around the coasts of Britain and Ireland.

This is Toothed wrack (Fucus serratus), also known as Serrated wrack, named for the sharp-looking toothed edges of its fronds.

As seen here, it is a brownish-green in colour, grows from a short stalk (shown in the photo at left), and its fronds are flat, with no air bladders.