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.

This large brittlestar can be found in rockpools around much of the UK, but be gentle - its arms are very brittle and will break off if disturbed.

The violet click beetle is a very rare beetle that lives in decaying wood, particularly common beech and ash. It gets its name from its habit of springing upwards with an audible click if it falls…

This gentle giant is the largest shark in UK seas, reaching up to 12m in length. There's no need to fear them though, they only eat plankton!