(Børsa - The Trondheim fjord / 17 meters / 3.25.2007)

Phylum: Arthropoda

Class: Pycnogonida

 

Norwegian: havedderkopper

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There are registered 39 kinds of sea spiders along the Norwegian coast. You may encounter them on any depth. They prefer rocky substrate and current exposed locations. They feed on hydroids and moss animals. The body is often elongated and segmented. At the back of the head (cephalon) there are often two pair of eyes, one directed forwards, the other pointing backwards.