Minecraft wiki entry for Island_survival, associated text: If you didn't find any island, but frozen ocean or frozen deep ocean, there are also extra resources you can collect, such as snowballs from snow blocks, and packed ice and blue ice (make sure to break the ice using a pickaxe with silk touch enchantment). Despite kelp and seagrass not generated here, the surface is completely frozen (except frozen deep ocean‌[Java Edition only]), so you can walk on this biome. In rare cases, ruins and shipwreck can generate inside icebergs, providing a easy source of loot. Just make sure to have armor and weapons, as they provide ares for the undead to spawn. Polar bears can spawn during the day, which can be dangerous when near cubs, and strays also spawn at night. Polar bears can drop fish and strays can drop bones, arrows, and sometimes tipped arrows.