Every year, in the middle of Croatia, it's the same story: after the annual snowmelt, a huge flood wave spills out of the Alps toward Zagreb and Belgrade. This leads to an increase in the River Sava's water levels of some ten meters. In the species-rich, alluvial flood forests of the last major meadow landscapes of the continent, enormous predatory fish like the catfish lie in wait for prey.

Dark green, impenetrable forests cover a landscape with secluded valleys and rugged mountain ridges. 2.000 rivers and streams dig deep into the underground and transport their water into reservoirs or "Germany's Wild Amazon", the Wupper. These forests and rivers, together with heath-lands and moors, are home to a diverse fauna. Martens, badgers, wild boars, hares, roe deer, red deer and wild boar...

With the aid of modern technology, reveal the unknown behavior of some unusual species of shark: lemon sharks and their white-tip reef counterparts.

In warm waters around the world a cold-blooded killer hunts its victims. Mysterious in its movements, ferocious and feared, the terrifying Tiger Shark… distinctive in its dark stripes… These man-eaters are the stuff of nightmares… They can slip past our defences to savage us. Highly-adaptable hunters, they swallow up whatever they can catch. Even turtle shell is no defence against powerful jaws an...

As one of Germany’s beauties, the river was the gem of German landscape. But with industrialization it became the country’s hardest working river and like everything that has been overworked, it lost it magnificence and charm. Due to tender love and care, the river is now a reigning example of one of the most successful and outstanding renaturation projects in the country.