In the sea, there are plastic shopping bags and PET bottles that are land-derived garbage, and there are also lures and fishing gear rooted in rocky areas, and these marine debris become microplastic or ghost fishing. If you find it, tap it to collect it.
Also, marine life will appear one after another, so tap it to get information. Some of these creatures eat sea urchins and coral, which are one of the causes of rocky shore shore, so tap them to get rid of them.
(1) The creatures that appear are red sea bream, bristle, que, mackerel tuna, bonito, shimaji, hirome, yellowfin tuna, flounder, horse mackerel, grunt, medina, bluefin tuna, stephanolepis crab, bonito, and barracuda.
(2) Items to be collected are lures, fishing nets, PET bottles, and plastic shopping bags.
(3) The creatures to be exterminated are Gangazeuni and Crown-of-thorns starfish.