Visit The Helderse Valley on February 28, 2026 for the lecture The North Sea "upside down"“. The KNNV Alkmaar branch Den Helder organizes this lecture on biodiversity in the North Sea. Biologist and underwater photographer Peter H. van Bragt takes you beneath the waves.
Discover what you don't see
You'll hear about life underwater, the hidden species you can't see from the beach, and why these secrets are important. The lecture will address climate change, new species and work with DNA research to better understand marine diversity.
For nature lovers and the curious
The lecture is free to attend and open to everyone from approximately 15 years. You don't need to register in advance. There will be an opportunity to ask the speaker questions.
Learn about marine wildlife
Peter shares his images and insights with a wide audience. You'll discover why the North Sea is more than just water and waves; it's a world teeming with life that deserves your attention.
