Big Seaweed Search

The Big Seaweed Search is a joint project between the Marine Conservation Society and the Natural History Museum.

The Big Seaweed Search asks volunteers to identify, photograph and record 14 key species of seaweed that can be found around the UK coastline.

Why record seaweed?

Did you know? The UK coastline is home to an amazing variety of seaweeds. 650 different species live and grow around the UK!

It may be a bit slippery and slimy, but seaweed is a real ocean superhero. Studying seaweeds can tell us a lot about wider ocean and environmental conditions. By taking part in the Big Seaweed Search, you’ll be helping to gather vital evidence that can be used to map and document any changes to our coastal environments.

The more data that's gathered, the more knowledge and influence there will be to fight for the future of our seas.

How to take part in the Big Seaweed Search

Whether you live by the sea or only visit every now and again, you can get involved in the Big Seaweed Search! It’s free, fun, and suitable for everyone – you don’t need to be a scientist to get involved.

Steps to become a seaweed citizen scientist

1. Download the seaweed guide and recording form
2. Head to the beach
3. Select your survey area
4. Get seaweed spotting
5. Send in your results
6. Take part again

Find out more here.