HR Giger: The Spell IV references George Melies' "20,000 leagues under the sea"

leading from 

HR Giger's The Spell IV (1977)

The other source of inspiration would have been images from George Méliès ' 1906 movie "20,000 leagues under the sea" with a scene dominated five pointed star and women posing around the picture, some with lower bodies transformed into tentacles ending with fish tails