Roedd morgathod brych bach yn arfer cael eu galw’n forgwn brych lleiaf – ac efallai mai felly’r ydych chi’n eu hadnabod orau. Yr un siarc yw hwn, ond gydag enw gwahanol!

The grass snake is our longest snake, but don't worry if you find one in the compost heap - it's harmless! Look out for this green and yellow beauty in grasslands and wetlands, too.

The red fox, with its unmistakable bushy tail, can be seen in towns and the countryside. They mostly come out at night, but can also be seen during the day if you’re lucky!

The common whelk is the largest sea snail found in UK seas, though you're more likely to find the dry balls of empty whelk egg capsules washed up in strandlines.

Plaice is a common sight all around our coasts - if you can spot it! They are extremely well camouflaged against the seabed and can even change colour to better match their surroundings.

Have you ever seen those worm-like mounds on beaches? Those are a sign of lugworms! The worms themselves are very rarely seen except by fishermen who dig them up for bait.

The silver-washed fritillary gets its name from the silver streaks on its underside. It is on the wing in summer, preferring sunny glades in woodlands. Despite declines, its range has spread over…

It's easy to see where the snakelocks anemone got its name when you spot its flowing tentacles. But be careful when out rockpooling, those tentacles give a nasty sting!

If you have a garden pond, look out for the large red damselfly resting at the water's edge. As the name suggests, males are bright red with a black thorax, but females may be almost entirely…