 The group discovered a vast frontier which served as good fishing grounds .Filemon Cloma and brother Tomas Cloma consulted the maps for the islands, but didn't find maps containing the islands.Tomas Cloma hoped to set up a fish cannery  (and mine the guano- interestingly, Japan also wanted to use the area for guano back around 1920 ), and thus funded an expedition led by Filemon and crew to explore the islands .