Are there sharks in the Wadden Sea?
Joep Wolters
2025-10-05 20:50:40
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In 2015, shrimp fishermen in the Wadden Sea began to tag sharks which they caught accidentally.
Lesser spotted dogfish live close to sandy or muddy bottoms, preferably where seaweed also grows.
Young dogfish prefer shallow water while adults prefer deeper water.
Lesser spotted dogfish are found in the northeastern Atlantic Ocean, including the North Sea.
They can swim incredible distances.
Specimen that were caught and marked in the North Sea were found later on as far away as the Canary Islands.
You can usually see a tear where the young shark left the egg.
Lesser spotted dogfish are small bottom sharks and are harmless for man.
Sometimes you find the empty olive-colored egg cases along the flood mark on the beach.
These egg cases are also called mermaid’s purses.
It is very unusual to find a case that still contains life.
That is easy to check, since the egg capsule is transparent.
Job van Dam
2025-10-05 16:55:28
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In 2015, shrimpers in the Wadden Sea were asked to begin tagging any sharks that they caught in their nets and putting them back in the sea.
Researchers would like school sharks in and around the Wadden Sea to be tagged and tracked with GPS in order to determine how often the northern Dutch waters are used as a shark nursery.
Walker says that the group is carrying out research into sharks and rays that are found in Dutch waters and in former Dutch territories abroad.
Livia Vermeulen
2025-10-05 16:02:38
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Sharks and rays seek refuge between the flooded sea banks.
The Wadden Sea is the largest intertidal area in the world, but there are few sharks and rays to be found there now.
Sharks and rays play an important ecological role in the intertidal areas.