So-named for the silvery-white appearance of its leaves, the white willow can be seen along riverbanks, around lakes and in wet woodlands. Like other willows, it produces catkins in spring.

So-named because its gnarled trunk can split as it grows, the crack willow can be seen along riverbanks, around lakes and in wet woodlands. Like other willows, it produces catkins in spring.

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, '…

A summer visitor, the willow warbler can be seen in woodland, parks and gardens across the UK. It arrives here in April and leaves for southern Africa in September.

A recent colonist to south east England, the metallic-green willow emerald damselfly spends much of its time in the willow and alder trees that overhang ponds, lakes and canals.

Britain's largest 'diving beetle' is an impressive creature, though it's not easy to find.