• Norwegian: -

Characteristics:

Very similar to F. nobilis, but can be distinguished from this by the two white lines running along the body, below the cerata. A white line runs along each of the two tentacles and join to form a single line on the top of its back. The body color is translucent white, while the cerata are often yellow, orange, red or brown. The body length may reach 4 cm.

Habitat:

It is often seen feeding on hydroids below the tidal zone. It can be found on any depth, down to 400 meters.

Distribution:

It is registered in the western Mediterranean and the Atlantic coasts of Europe, as far north as Norway.