The largest of the UK wrasse species, the ballan wrasse with its striking patterning is a delight for any rocky reef snorkeller or shallow water diver!

Mae'r rhywogaeth yma o forwellt yn fath o blanhigyn blodeuol sy'n byw o dan y môr, gan ddarparu cynefin pwysig i lawer o rywogaethau prin a rhyfeddol.

Ydych chi wedi gweld y twmpathau tebyg i bryfed genwair yma erioed ar draethau? Arwyddion o lyngyr y traeth yw’r rhain! Nid yw’r llyngyr eu hunain i’w gweld byth bron, ac eithrio gan bysgotwyr sy’…

Sphagnum mosses carpet the ground with colour on our marshes, heaths and moors. They play a vital role in the creation of peat bogs: by storing water in their spongy forms, they prevent the decay…

A scarce but distinctive brown seaweed with curved, funnel-shaped fronds. It is a warmer water species at the northern edge of its range on the south coast of England.

Arrowhead is an aquatic plant of shallow water and slow-moving waterways. In bloom over summer, it displays small, white flowers, but it is the arrow-shaped leaves that are most distinctive.