From polar water to tropical seas, jellyfish have existed for more than 670 million years. Their recipe for success is their ability to adapt. They can tolerate long periods of hunger, reduce their body weight by 99% and even eat their own sexual organs if necessary - and they are dangerous predators. In addition, jellyfish may soon revolutionize human medicine. Jamie Seymour, an Australian marine..

From the first time she saw a shark, German comedy star Wolke Hegenbarth was fascinated by their beauty, grace and amazing abilities. Since she moved to her new home in Cape Town, South Africa, she has been confronted with the threats facing sharks, and resolved to fight for their survival. For the "terrors of the seas" are themselves among the most endangered ocean species. Over 100 million shark..

In 1761, a giant monster is pulled from the Oder River: an 820-pound Wels Catfish, the largest sweet-water fish in Europe. Not just any old fish: Until this day, the Wels Catfish remains a curse, a legend, a myth - as well as a tasty dish and prized catch.In 1979, two river policemen observed a Wels Catfish that was almost as long as their 5 m long vessel. But how much of the stories are fact and..