The Sturgeon - a creature of legend, hidden in the depths western Canada's Fraser River - a ghost in the water, a giant among us
A small colony of 'Little Penguins' live on Penguin Island off the coast Perth, Western Australia.
The island has a Discovery Centre which treats and houses penguins that have been injured, orphaned or abandoned, usually as chicks
The Chalgrove Brook is a chalk stream that rises in the Chiltern Hills and flows through the Oxfordshire countryside providing an important ecosystem for local wildlife - but the stream is now under threat
As severe floods become more common communities and researchers around Britain are exploring ways to work with rather than against nature to manage flood waters
