[citation needed] Herring, mackerel and hake are the more common of the country's marine fish, but basking sharks and sunfish can also be seen.
[citation needed] River fish of note include char, eel, salmon, shad, sparling and Arctic char, whilst the gwyniad is unique to Wales, found in two locations, Bala Lake, with a conservation population in another lake in the same area.
Other mammals include badgers, foxes (one of the most common mammals in Wales), hares, hedgehogs, otters, rabbits, stoats, weasels and red squirrels; pine martens are very rarely seen, but European polecat (Mustela putorius) can be found in both urban and country environments.
Dippers, choughs, puffins, guillemots, razorbills, short-eared owls, Manx shearwaters, whimbrel and plovers are also common.
[2] Some sand lizards bred by Herpetological Conservation Trust volunteers and Chester and Jersey Zoos have been released into the wild.