It has an identifiable head with four eyes, two sensory feelers or palps, and many tentacles.
Coeurl appear as feline enemies in the Final Fantasy series, usually with enlarged tentacle-like whiskers.
Gonionemus is a genus of hydrozoan that uses adhesive discs near the middle of each tentacle to attach to eelgrass, sea lettuce or various types of algae instead of swimming.
Another piece of art in the booklet shows these snakes emerging from a giant tentacle/Cornucopia.