The whip-tailed tree octopus. According to Yamada: “It is the largest species of tree octopus indigenous to Snake Island. This specimen is a 49-inch adult female. [The] tree octopus is an extremely rare terrestrial octopus with modified gills (similar to the lungfish and frog) and thick, dry skin for terrestrial life [in] wetland and rainforest. Unlike the common eight-legged sea dwelling octopus, all the tree octopus[es] have ten legs (just like the common squid and cuttlefish).