Cactus : The Wandering Ocean Story Detail . Stranger . The crew of Jane are presented with an interesting problem ; they are drifting through a ocean of sand . As the others discuss the issue , Ai attempts to engage Yu in conversation , something she seems to have been doing unsuccessfully since Yu was separated from the others during . In an attempt to cheer Yu up , Ai attempts to retrieve chocolate from Poshepoke . However , a small cactus like creature appears . The strange creature proves very fast and agile and swiftly escapes to the ship at large . After various encounters aboard Jane , the creature escapes from the ship into the surrounding desert , with Ai , Lisa and Yu in hot pursuit . Lifeless . Chasing the creature through the desert , Lisa notices that the life energy seems to have been drained from the sand , and not simply died . The chase comes to a close when Ai follows to a hole in the ground . Gathering around the pit , numerous pairs of eyes stare back at the trio , and a number of voices are heard from within . Thousands of creatures emerge from the hole , quickly surrounding the group . The two sides attempt to communicate with each other , but with neither knowing the others ' language progress is slow . Cactaur . Having led the creatures back to Jane , Lisa discusses the situation with Cid , Miles and Knave . It is then that Fungo reveals that he can understand what the Cactaurs are saying . He states that the Cactaurs are fleeing from a " Wandering Ocean " ; he explains that the Cactaurs were once far greater in number and give in a city of their own , but this Wandering Ocean appeared and destroyed their city and killed many of their people . He concludes by saying that the Cactaurs live underground mostly , but are searching for a way to end the Wandering Ocean so they may rebuild their lives . Those present agree that the Wandering Ocean must be destroyed as it is both the cause for the Cactaurs ' unrest and most likely this cube ' s challenge . Before and further plans can be made , Cid announces that the Wandering Ocean is approaching . As the others make hasty preparations , Lisa uses her art to determine that the approaching Wandering Ocean is comprised of the souls that have died in the Ocean , causing it to grow larger and larger . As all signs begin to indicate that the Ocean is approaching , Crux is seen overhead . The Wandering Ocean . The moment visual contact is made , the Comodin spring into action , launching a special torpedo filled with a drying agent at the tidal wave like ocean . However , this , Lisa ' s Kigen , and Cid ' s machines all fail to stop the advance with barely a waver . Seeing that any force they possess is useless , the Comodin evacuate Jane and retreat to an overlooking hill . However , Lisa , who fell unconscious from the effort to use her Kigen , and Kaze remain near Jane . As Lisa recovers she witnesses Kaze priming and loading the Magnum . He fires , summoning Bismark . However this proves largely ineffective , as the Wandering Ocean withstands even Kaze ' s power . However it he does manage to condense the Ocean into a single pillar of water . The Cactaurs seize the opportunity and begin to circle the pillar at high speeds , creating a whirl wind of their life energy . This finally manages to disperse the energy , but the Cactaurs have sacrificed their lives for the cause . Epilogue . As the Comodin mourn the passing of the Cactaurs , one of them suddenly springs back to life . After a few cries of joy , this effect seems to shock wave through the Cactaurs , with all of them returning to life . With the Cactaurs departing , the Comodin board Jane once more , with Lisa thanking Kaze from helping them as they do so . Soil . A single combination is seen , with the combination as follows : This combination summons Bismark ; a large whale like creature which can control the flow of water .