Ein hunig neidr wenwynig, gellir gweld y wiber swil yn torheulo yn yr heulwen mewn llennyrch mewn coetiroedd ac ar rostiroedd.

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

Beavers are the engineers of the animal world, creating wetlands where wildlife can thrive. After a 400-year absence, beavers are back in Britain!

Piddocks are a boring bivalve. No, we don't mean dull... we mean that it bores into soft rock, creating a burrow. In fact, they're the opposite of dull - they glow in the dark!

Found in ponds and marshes, the fragile look of the Common water-measurer belies its fierce nature. A predator of small insects, it uses the vibrations of the water's surface to locate its…

Guillemots really know how to live life on the edge – quite literally! They nest tightly packed on steep ledges and cliffs around the coast. This may sound like a strange nesting spot, but it…

Spot these tall, prehistoric looking birds standing like a statue on the edge of ponds and lakes, contemplating their next meal.

The razorbill has a characteristically thick, black bill, with a white stripe across it. It nests with other seabirds, such as guillemots, but prefers the lower ledges and rocky bottoms of cliffs…

Despite appearances, this weird and wonderful creature is not a jellyfish! They're sometimes found washed up on our shores after westerly winds. Look but don't touch - they give a very…

This yellow-brown seaweed grows in tufts at the very top of rocky shores. Its fronds curls at the sides, creating the channel that gives Chanelled Wrack its name.