Sea slugs are an amazing model to study the neural circuits of behavior. How does a larger behavioral repetuar reflect in the brain of these "simple" creatures. Any names ?
Yo could look into the Gastropteridae (Cephalaspidea), many species of the different genera have been observed both crawling on substrate and swimming/flaping. They also have some interesting structures that may be chemosensors in the head region.
Article Rediscovery of Gastropteron chacmol (Gastropoda: Gastropteri...
Article Revision of the Gastropteridae (Opisthobranchia: Cephalaspid...