Planaria are flatworms in the phylum Platyhelminthes with amazing regeneration abilities giving them the title 'immortal under the edge of a knife'. There are many different species that…

The oak marble gall wasp produces brown, marble-shaped growths, or 'galls', on oak twigs. Inside the gall, the larvae of the wasp feed on the host tissues, but cause little damage.

The rare heath fritillary was on the brink of extinction in the 1970s, but conservation action turned its fortunes around. It is still confined to a small number of sites in the south of England,…

Mackerel are a sign of summer's arrival, when they appear inshore in huge numbers all around the UK. As well as being a sustainable seafood choice, they are an important food source for many…

Despite being a little shy, these amazing marine mammals can be spotted close to shore in shallow waters. If you do get close, keep an eye out for the loud ‘chuff’ noise they make as they come to…

The hen harrier has been severely persecuted for taking game species and has suffered massive declines in numbers as a result. Thankfully, conservation projects are underway to reduce conflict…

A stocky, little sandpiper, the knot can be spotted in estuaries from August onwards, migrating here from the Arctic where it breeds. Look out for it probing the muddy sand with its specialised…

A key species in the story of conservation, the avocet represents an amazing recovery of a bird once extinct in the UK. This pied bird, with its distinctive upturned bill, can now be seen on…