A common thistle of roadside verges, rough grassland and waste ground, the Musk thistle has large, purple, nodding flower heads that appear in summer. It is attractive to a wide range of insects…

Look for the wood warbler singing from the canopy of oak woodlands in the north and west of the UK. Green above, it has a distinctive, bright yellow throat and eyestripe.

In spring and summer, look out for 'cuckoo-spit' - the frothy mass of bubbles that appears on plant stems everywhere. This is actually the protective covering for the nymphs of the tiny…

The streamlined black-throated diver is a superb swimmer and diver, but not so graceful on land! During the summer, the distinctive black patch on its throat appears, heralding the breeding season…

A common plant of disturbed ground like roadside verges and field edges, the spear thistle has purple, fluffy flower heads that appear in summer. Its flowers attract insects and its seeds feed…

Look out for the small holly blue in your garden or local park. It is the first blue butterfly to emerge in spring, and a second generation appears in summer. The caterpillars are fond of holly…

A bushy brown seaweed that appears bright blue underwater.

The dark-blue flowers of Common milkwort pepper our grasslands from May to September. It can also appear in pink and white forms.

In mild years, the spring-flowering primrose can appear as early as December. Look out for its pretty, creamy-yellow flowers in woodlands and grasslands.

One of the most bizarre fish to find on the rocky shore, the clingfish appears an assortment of different animals stuck together!