Khanz is right, its all about the boats!
Aside from that, I would really like to see a symbiotic (is this the right word?) relationship between two Inhabitants like PA kinda mentioned above, something like the Fleeches and Slurgs relationship. They work together in order to catch prey (i.e- the Slurgs alert the sleeping fleeches of prey and the fleeches catch it, eat it, then give the left overs to the Slurgs.)