Dyma gewri byd y slefrod môr a’r creaduriaid anhygoel yma yw slefrod môr mwyaf y DU! Mae’r slefren yma’n gallu tyfu i faint clawr bin sbwriel – gan roi iddi ei henw cyffredin arall: slefren fôr…

Ydych chi wedi gweld blociau jeli coch tywyll erioed wrth archwilio pyllau creigiog? Y creaduriaid yma yw pysgod gleiniog yr anemoni! Maen nhw’n byw drwy lynu wrth greigiau bob cam o amgylch…

The White admiral is a striking black-and-white butterfly with a delicate flight that includes long glides. It prefers shady woodlands where it feeds on Bramble.

The brown rat has a bad reputation, but it mostly lives side-by-side with us without any problems. It can be seen in any habitat.

As its name suggests, Water dock likes damp places, such as the egdes of canals, ponds and rivers. It is a tall plant with large, greenish flower spikes.

This brown seaweed lives high up on rocky shores, just below the high water mark. Its blades are usually twisted, giving it the name Spiral Wrack.

This yellow-brown seaweed grows in tufts at the very top of rocky shores. Its fronds curls at the sides, creating the channel that gives Chanelled Wrack its name.