Wedi'i gyfyngu'n bennaf i ogledd y DU, mae’r bele prin yn nosol ac yn anodd iawn ei weld. Fodd bynnag, gellir ei hudo i ymweld â bwrdd adar llawn pysgnau.

White dead-nettle does not sting. It displays dense clusters of white flowers in whorls around its stem, and can be found on disturbed ground, such as roadside verges.

The dark green fritillary is actually an orange butterfly with black spots. It gets its name from the dark green hue to the undersides of its hindwings. A strong flier, it can be seen on open,…

The common octopus is a highly intelligent, active predator. It even has a secret weapon - special glands produce a venom that it uses to incapacitate its prey!

The long mane of tentacles that stream out from the lion's mane jellyfish is stunning… literally! Look but don't touch when it comes to these jellyfish - they give a powerful sting.

As its name suggests, the Dwarf thistle is a low-growing plant that is almost stemless - its purple, thistle-like flower heads growing out of a rosette of spiny leaves.

Red dead-nettle does not sting. It displays dense clusters of pinky-red flowers in whorls around its stem, and can be found on disturbed ground, such as roadside verges.

Selfheal is a low-growing, creeping plant that likes the short turf of grasslands, roadside verges or even lawns. Its clusters of violet flowers appear in summer.