Cuttlefish are related to squids and octopuses – a group of molluscs known as cephalopods. You may have seen the chalky internal shell, called a cuttlebone washed up on beaches around the UK.…

The marsh hair moss is the largest moss in the UK. Look out for it in damp woodland and on boggy heathlands where it forms large, green and spikey 'cushions'.

These winter visitors are close relatives of the chaffinch and can often be found in the same flocks, where their white rump and nasal calls give them away.

Sea potatoes may have a funny name, but they are perfectly adapted for life in the sand. They are a type of sea urchin that live in a burrow in the sand, feeding on dead animals and plants using…

The common green lacewing is a lime green, delicate insect, with translucent, intricately veined wings. It is common in gardens and parks, where it helps to control aphid pests.

A scarce tree of England and Wales, the Large-leaved lime is the rarest of our native limes. It is tall and broad, and can be found in forests and parks, where it is frequently planted.

You are most likely to spot the cat flea if you have pets. It will feed on cats, dogs and people, although it can't live on us. It is a pest and needs to be controlled in the house for the…

Ydych chi wedi gweld wyneb chwilfrydig morlo llwyd erioed, yn codi rhwng y tonnau wrth i chi ymweld â thraeth? Gellir gweld morloi llwyd yn gorwedd ar draethau yn aros i’w bwyd fynd i lawr.…

With their beautiful striped tentacles, it's easy to see where dahlia anemones got their floral name from. Look out for them next time you're rockpooling!