Mae’n hawdd gweld o ble mae’r seren fôr fechan yma wedi cael ei henw, mae wir yn edrych fel clustog bychan siâp seren. Y tro nesaf rydych chi’n archwilio pyllau creigiog, cadwch lygad o dan y…

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…

The rare natterjack toad is found at just a few coastal locations, where it prefers shallow pools on sand dunes, heaths and marshes.

Escaped or intentionally freed from fur farms in the 1960s, the American mink is now well established in the UK. Its carnivorous nature is a threat to our native water vole and seabird populations…

The Leyland cypress, or 'Leylandii', is a notorious tree that has been widely planted for its fast-growing nature. It easily can get out of control, shading gardens at the expense of…

The Glanville fritillary can be spotted on warm days around coastal habitats on the Isle of Wight and the Channel Islands, as well as at a few locations in mainland England.

Mae’r hwyaden fechan ddoniol yma’n driw i’w henw – cadwch lygad am y plu du copog ar ei phen