(a species of owlet moth (Noctuid)) Some caterpillars, after they emerge from their egg, can increase their weight by 25,000 times.

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Nature societies online

A directory of British and Irish natural history and related societies.

Would you like to find out about or get involved with your local nature society? This online directory is a comprehensive guide to natural history and subject specific organisations in Britain and Ireland.

Go to nature societies online.

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Cartoon image of a hatchet fish on a museum pass

Until 1938 whale carcasses were buried in the Museum grounds so that their flesh would decay leaving only the skeletons.