
Beavers Castor canadensis
Beavers Castor canadensis with beaver dam. Illustration based in Tierra del Fuego, where introduced beavers have damaged the closed ecosystem. Illustration from The Hidden Universe: Adventures in Biodiversity by Alexandre Antonelli

Welsh river landscape with boat
View of the river Wye over a still pool with overhanging tree and a little row boat moored by the river bank, distant hills behind

Welsh river landscape 2
Welsh river landscape looking across a stretch of smooth water to the trees on the opposite bank