This large green moth rests with its wings spread, so is sometimes mistaken for a butterfly.

Mae’n hawdd iawn methu’r glas y dorlan trawiadol heb fod yn wyliwr craff iawn! Mae’r aderyn hardd yma’n hawdd ei adnabod diolch i’w liwiau glas llachar a chopr metalig. Mae’n gwibio ar hyd glan yr…

A fluffy-looking grass of rough grassland, roadside verges and disturbed ground, False oat-grass is very familiar and often overlooked; in fact, it can help to stabilise dunes and shelter small…

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,…

Many of us have felt the painful bite of the Twin-lobed deer-fly (a 'horse-fly') while out walking in damp grasses or woods. But mostly, it prefers to feed on the blood of cows and…

This brown seaweed lives in the lower shore and gets its name from the serrated edges to its fronds.

The water vole is under serious threat from habitat loss and predation by the American mink. Found along our waterways, it is similar-looking to the brown rat, but with a blunt nose, small ears…