Forming mats of straight, bright green stems, Common spike-rush does, indeed, look like lots of tightly clustered 'spikes' near the water's edge of our wetland habitats.

The gudgeon is a bottom-dwelling fish, similar to the stone loach, but with only two whisker-like barbels near its mouth. These sensory organs help it to find its prey in the sand and gravel of…

The holm oak is an introduced species that has been widely planted near the coast and in parkland. It is self-seeding in the south of the UK. Its young leaves are spiny like holly leaves, and it…

The metallic-green musk beetle lives up to its name: it releases a musky-smelling secretion when it defends itself. It is a longhorn beetle, so has lengthy antennae. Look for it near wetlands in…

The alder fly is a blackish invertebrate, with delicately veined wings that it folds over its body like a tent. It can be found near ponds and slow-flowing rivers; the larvae living in the silt at…

A fierce pirate of the sea, the Arctic skua is renowned for stealing fish from other seabirds and dive-bombing anyone that comes near its nests. It breeds in the far north of Scotland and on the…

This species can pack a powerful sting, so be sure not to get too close!

The small, shaggy-furred Brandt's bat roosts in all sorts of houses, old or modern. It is similar to the whiskered bat and they often roost together, but in separate colonies. It feeds low to…

Reed sweet-grass is a towering grass with large, loose flower heads that can be found on marshy ground near rivers, streams and ponds. It can become invasive, but does shelter various aquatic…