Brown trout are found throughout, sometimes with eels and sea trout, all pursued by otters which are surprisingly numerous.
An important resident is the freshwater mussel, which may live for up to eighty years and, among the birds, divers (both black and red throated) nest on the shores of some lochs.
Beautiful Loch Beannach is, in a way, the heart of Little Assynt. Its wooded islands are an important remnant of woodland which once extended over much of the adjoining countryside giving a covering rich in ground flora.