Lecture by biologist and national park guide Claudia Thorenmeier.

Seals, grey seals and porpoises are the marine mammals that live in the sea Borkum How do seals live? Where can you observe seals and when are their pups born? How much fish do they eat per day and how deep can they dive? Harbor porpoises are less frequently seen. How do they live? How do they find their way and how are the young born?

Dive into the secrets of marine mammals. Of course, there is also a brief overview of seals and whales worldwide and the BorkumWhaling 300 years ago.

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