• Norwegian: -


The length of the translucent, white speckled body, is less than 3 cm. A low keel runs down the middle of the back, continued by another keel on the "tail". A white pigmented stripe may follow the keel, both on the back and the "tail".


G. nodosa can be found from the sublittoral zone and down to 120 meters depth.


It is registered from Spain and as far north as Nordland, Norway, including the British Isles.