Gliding behavior (or volplaning) in arboreal animals has independently evolved numerous times: e.g. in squirrels, possums, primate relatives, lizards, frogs, and even snakes. It has also evolved in aquatic cephalopods, relatives of octopuses. That tree octopuses would eventually discover the efficiency and freedom of gliding from one tree to another seems inevitable, especially if they start migrating great distances through the forests.