Yn gwibio o gwmpas y tŷ yn yr haf, mae'r copyn heglog, brown yn gyfarwydd i lawer ohonom. Mae’n ffynhonnell fwyd werthfawr i lawer o adar.

The defensive mechanism of the pill woodlouse is very recognisable - it curls itself into a tight ball, only showing its plated armour to its attacker. It is an important recycler of nutrients,…

The shy and retiring bittern is a master of blending in and can be very difficult to spot in its reedbed home. It does sound like a booming foghorn, however, when it calls, so can often be heard…

It is so easy to miss this clever little moth. It is a master of disguise, blending in perfectly as it looks just like the twig of a birch tree! Flying only at night, the buff-tip moth can be seen…

Mae’n bur debyg eich bod chi wedi gweld llawer o wiwerod – ond ydych chi wedi gweld un goch? Mae gwiwerod coch yn frodorol i’r DU ond yn llawer prinnach na’u cefndryd llwyd! Maen nhw’n byw mewn…

This slender and elegant shark species is often found close to shore all around our coasts and can grow up to 6 feet long.

This sooty-black, day-flying moth is active on sunny days, rarely settling in one place for long.

Enchanter's nightshade is a hairy plant, with rounded leaves that taper to a fine tip, and clusters of small, pinky-white flowers in summer.

This well-camouflaged wader is a winter visitor to the UK, where it can be seen feeding on wetlands with a distinctive bobbing motion.

This stocky wader is mostly a winter visitor to the UK, where it can be found on rocky, seaweed-covered coasts, often with groups of turnstones.

This slender shark gets its name from the spines in front of its dorsal fin. It can use these spines to defend itself by curling in a bow and striking at a predator.