- Kingdom: Animalia
- Phylum: Echinodermata
- Subphylum: Echinozoa
- Class: Echinoidea
- Order: Camarodonta
- Family: Parechinidae
- Scientific name: Strongylocentrotus droebachiensis
- Norwegian: drøbakkråkebolle
This medium sized, regular sea urchin may reach a diameter of 8 cm. The profile is flattened. The shell and spine color is usually white, green or brown. The primary and secondary spines are of approximately the same lengths.
It can be found on any depth from the subtidal zone and down to 1200 meters.
It is widespread over virtually the entire northern hemisphere.