With almost no wind at all, the weather is ideal for Florian and Natali to join scientists from the Heligoland Biological Institute on a dive, where they observe porpoises and other marine animals in their protected habitat. Höchst interessant!

Even though the catshark's rough skin makes it a less than ideal meal, this doesn't keep the hungry gray seal from trying. However, the seal takes time off from the hunt to make friends with the divers.

Now Florian and Natali leave behind the Oosterschelde and take to the air! In this episode, we get a glimpse of the mud flats in the intertidal zone: home to friendly seals and a resting place for migratory birds.

In this installment, the sea creatures in the Oosterschelde are busy spawning and the male cuttlefish prepare for mating battle.

Florian and Natali finish a great first dive with the basking sharks and then make their way to the coast of Holland.

The North Sea is an unpredictable and mysterious marine habitat, teeming with life. Join marine biologists Florian Graner and Natali Tesche-Ricciardi on an exciting adventure!

The Frankfurt Music Trade Fair has everything for the musician that the music industry has to offer, from tiny bells to the world's largest loudspeaker. For classic metal fans, Scorpions guitarist Rudolf Schenker is interviewed too! A video from rheinmaintv.

Germany, ever a leader in automotive technology, will have to wait until 2025 before fully-automated vehicles are allowed on the autobahn. Continental may be ahead of the curve in Europe, but unless the EU makes a new law, the Google driverless car will stay hot on their heels. (video copyright dpa)

Kids at the "Schule am Hang" elementary school in Frankfurt am Main are doing experiments on energy resources, and all of it sponsored by the local electric company Mainova AG. See if you can spot the future scientists among the kids interviewed!

It looks like a yellow cigar and drives like a lawnmower on the bottom of the sea: Kiel researchers hope that the submarine "Abyss" can help find debris from the missing Malaysian Boeing flight. (video copyright dpa)

The great inventors' exhibition begins soon at the Nuremberg Exhibition Hall, where more than 700 inventions are on display. Check out just a few of the many clever ideas being presented. (video copyright dpa)

Imagine discovering an old animal footprint in a rock, and then finding out it is 316 million years old! An amateur geologist in North-Rhine Wesphalia was out walking with his kids and discovered exactly that: the footprint of a pre-dinosaur, which when it lived was about the size of a pig. This sensational discovery will be exhibited soon in Bochum’s German Mining Museum. (Video copyright dpa)

Do you consider yourself big-hearted? Well, the Westphalian Museum of Natural History in Münster has a working replica of a sperm whale heart that is the size of a compact car! For more about the fascinating whale exhibition at the museum, watch this news report. Copyright: Deutsche Presse Agentur [The German Press Agency]

We know that cities use machines to clean the streets, but did you know that specially-designed sidewalks can clean the air we breathe? Learn about the new way that the city of Frankfurt is working to improve the environment in this fascinating report from Rhein-Main TV. Umweltverschmutzung? Nein danke!

"There are inventions that were made and later forgotten, and there are inventions that somebody forgot to invent." Walter Günther from Frankfurt/Main has done some catching up. He makes devices, which look as if they are from a museum, but which in reality never existed! (Copyright DPA)