Freshwater pearl mussels spend their adult lives anchored to the river bed, filtering water through their gills and improving the quality of the water for other species.

One of the UK’s rarest marine species, this giant of the rocky shore is a very special fish.

The grey plover is similar to the golden plover, but as its name suggests, has a silver- and black-speckled back, rather than a gold one. It is only found at the coast and is mostly a winter…

With a silvery body, and purple, pink and bluish streaks down its flanks, the rainbow trout lives up to its name. Popular with anglers, it is actually an introduced species in the UK.

There are several species of spider that live in our wetlands, but the water spider is the only one that spends its life under the water. In its pond habitats, it looks silvery because of the air…

One of our commonest willows, the Goat willow is a small tree that is found in ditches, reedbeds and wet woodland. It is well-known for its silver, fluffy catkins that give it another name, '…

One of our commonest willows, the Grey willow is a small tree that is found in ditches, reedbeds and wet woodland. It is well-known for its silver, fluffy catkins that give it another name, '…

The largest of the UK wrasse species, the ballan wrasse with its striking patterning is a delight for any rocky reef snorkeller or shallow water diver!

There are several species of cucumber spider, recognised by their bright green abdomen.