The red-throated diver lives up to its name - the distinctive red patch on its throat heralds the breeding season. In summer, it nests in Scotland, but look out for it around the UK's coast…

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.

Found around our coasts during the breeding season, the little tern is a diminutive seabird. Despite its size, it performs remarkable aerial courtship displays.

Sand eels are a hugely important part of our marine ecosystem. In fact, the fledgling success of our breeding seabirds entirely depends on them.