Yr wylan gefnddu fwyaf yw’r wylan fwyaf yn y byd! Oherwydd ei maint, ychydig o ysglyfaethwyr sy’n ceisio ymosod arni, ond gall fod yn fyrbryd blasus o dro i dro i eryrod cynffon gwyn, siarcod a…

This tiny wading bird is most often seen in autumn, feeding on the muddy margins of wetlands.

This huge gull can be seen around most of the UK's coasts in summer, with some venturing inland in winter.

This wading bird is mainly a visitor on its spring and autumn migration, though a small number nest in Scotland.

Chinese water deer are easily distinguished from other deer by their strange teddy bear like appearance and the huge canine tusks displayed by the stags.

The scorpionfly, as its name suggests, has a curved 'tail' that looks like a sting. It is, in fact, the males' claspers for mating. It is yellow and black, with a long 'beak…

The porbeagle shark is a member of the shark family Lamnidae, making it one of the closest living relatives of the great white shark.

This birch-loving moth can be seen flying on sunny days in early spring.