Native oysters are a staple of our seas and our plates - but our love of their taste has lead to a sharp decline all around the UK.

The monkey-puzzle tree is unmistakeable with its pyramidal shape, jutting branches and stiff, dark green 'spines' (its leaves). Widely planted in the UK's parks and gardens, it is…

Largely confined to the north of the UK, the rare pine marten is mostly nocturnal and very hard to spot. Reintroductions are helping it make a comeback.

The tiny, brown-and-white sand martin is a common summer visitor to the UK, nesting in colonies on rivers, lakes and flooded gravel pits. It returns to Africa in winter.

Water figwort is a tall plant of riverbanks, pond margins, damp meadows and wet woodlands. Its maroon flowers are pollinated by the Common wasp.

Yn gawr ym myd y crwbanod môr, mae’r crwban môr cefn-lledr yn crwydro’r cefnfor gan chwilio am slefrod môr. Yn wahanol i grwbanod môr eraill, mae’r crwban môr cefn-lledr yn hoffi’r oerni! Mae hyn…

As its name suggests, the house martin can be spotted nesting in the eaves of houses in our towns and villages. Its intricate mud nests take days to build and are often returned to and used in…

Oyster mushrooms are shell shaped fungi that grow in tiers or fabulous clusters on dead trees or stumps. Unlike many fungi, these mushrooms are not seasonal and can be found all year round,…

This streaky brown bird is a winter visitor, occasionally found walking around the muddy margins of marshes.