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

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.

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.

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!

Because of its rocky subfloor, a unique marine ecosystem has sprung up off Heligoland. Florian and biologist Karin Boos take a closer look.

After observing up close the birth of skeleton shrimp in a small aquarium, Florian and Natali go diving off Heligoland in search of nocturnal marine creatures. Faszinierend!

The sea at night offers another view of many different creatures who come out to hunt... or be hunted! With this, Florian and Natali conclude their North Sea adventure.

Eylin, an astrologer and Yabla regular, tells us a bit about what drew her to astrology—and what benefits she feels it can offer to others who may be struggling.

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)

This Yabla video shows a machine from the Karlsruhe company SAC which inspects textiles for defects. If you are a fan of Technik, this video is for you!

The federally supported research project „Tomatenfisch" breathes life into the concept of sustainability. Integrating fish and vegetable gardening in the city center makes economic, ecological, and social sense. For years a subject of research, it's now on the verge of market viability. Sehr interessant!

A private lab in Germany is working to create a vaccine for COVID-19 as quickly as possible. The US and German governments are already vying for access to the results.

It sounds like science fiction: Researchers at the University of Augsburg are developing an app that can recognize a coronavirus infection whenever a potential carrier speaks into the phone. So far, the app has a hit rate of over 80 percent. Copyright: Deutsche Presse Agentur [The German Press Agency]

Who still remembers Newton’s First Law? Nobody? Well, then this clip by Mathematik.net is exactly right for you. Have fun brushing up on your physics (and language skills at the same time) while watching this video.

In this clip by Mathematik.net, a magnetic levitation train in a vacuum tube is used to illustrate Newton’s First Law.