You're more likely to see the attractive, brightly coloured caterpillars than the mullein moth itself.

Fat hen is a persistent 'weed' of fields and gardens, verges and hedgerows. But, like many of our weed species, it is a good food source for birds and insects.

Mae'r siarc main yma’n cael ei enw o'r pigau o flaen ei asgell ddorsal. Gall ddefnyddio'r pigau yma i amddiffyn ei hun drwy gyrlio mewn bwa a tharo ysglyfaethwr.

The common octopus is a highly intelligent, active predator. It even has a secret weapon - special glands produce a venom that it uses to incapacitate its prey!

Selfheal is a low-growing, creeping plant that likes the short turf of grasslands, roadside verges or even lawns. Its clusters of violet flowers appear in summer.

Look for the small, white, star-shaped flowers of Common chickweed all year-round. Sometimes considered a 'weed', it is still a valuable food source for insects.

Despite being considered a 'weed' of cultivated ground, the seeds of the Creeping thistle provide an important food source for farmland birds, many of which are declining rapidly.

The porbeagle shark is a member of the shark family Lamnidae, making it one of the closest living relatives of the great white shark.