The commonest barnacle found around our shores, the Acorn Barnacle lives attached to any hard substrate, including rocks, the legs of piers, old boats and even other animals. They are filter feeders, picking plankton and detritus out of the water. Found around the low tide mark.
How to identify
One of several very similar species of barnacle, which can be hard to tell apart. The Acorn Barnacle is generally grey-white in colour, with a diamond-shaped opening.
Where to find it
Found all around our coasts.
When to find it
How can people help
Our seas and coastline are in need of protection if we are to keep our marine wildlife healthy. The Wildlife Trusts are working with fishermen, researchers, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives. This work has recently had a massive boost with the passing of the Marine Bill, promising sustainable development of the UK's marine environment. Do your bit for our Living Seas by supporting your local Wildlife Trust.