Despite its warts and ancient associations with witches, the common toad is a gardener's friend, sucking up slugs and snails. It is famous for migrating en masse to its breeding ponds.

A bushy brown seaweed that appears bright blue underwater.

This dashing diving duck is a winter visitor to the UK's seas, coastal lakes and occasionally inland water bodies.

The velvet shank can be found clustered on the dead and dying wood of deciduous trees, such as elm, ash, beech or oak. It has a bright orange cap and can be seen throughout winter.

There are several species of cucumber spider, recognised by their bright green abdomen.