In the Atlantic's extreme north region, summer is short and food limited. Three of the five Arctic fox cubs have already left home - and time is running out for the remaining two. The two white-tailed eagle chicks have fed well and are now almost the size of their parents. They have out grown their nest, so it's time to take their first flight. For puffins, leaving home means jumping from their cliff top nests 600ft to the ocean below. Further south, in southern Spain's Donana National Park, dung beetles benefit from the rare Retueta horses, while in the UKs shallow coastal waters, sea horses dance, basking sharks gorge and blue sharks scavenge.