Mae môr-gyllyll yn perthyn i ystifflogod ac octopysau – grŵp o folysgiaid sy’n cael eu hadnabod fel seffalopodau. Efallai eich bod chi wedi gweld y gragen fewnol sialcog, o’r enw asgwrn cyllell,…

A king among birds, the goldcrest displays a beautiful golden crown. Our smallest bird, it can be spotted in conifer woodlands and parks across the UK.

Golden banks of common rock-rose make a spectacular sight on our chalk and limestone grasslands in summer. A creeping shrub, it is good for bees, moths and butterflies.

Familiar as the bristly plant that easily hooks on to our clothing as we walk through the countryside or do the gardening, cleavers uses its hooks to help it climb and to disperse its seeds.

Mae noethdagellogion, sy’n cael eu hadnabod hefyd fel gwlithod môr, yn debyg iawn i’w perthnasau ar y tir a welwch chi yn eich gardd efallai. Ond, yn wahanol i wlithen yr ardd, mae’r noethdagellog…

Cuttlefish are related to squids and octopuses – a group of molluscs known as cephalopods. You may have seen the chalky internal shell, called a cuttlebone washed up on beaches around the UK.…

A fierce predator of small fish and flying insects, the brown trout is widespread in our freshwater rivers. It is has a golden body, flanked with pale-ringed, dark spots.