Minecraft wiki entry for Ocean, associated text: The legacy frozen ocean variant is similar to frozen ocean biomes, but without icebergs, making it look like flatlands of ice. Rabbits, polar bears and strays spawn in here. Rabbits have their snowy texture. No monsters other than drowned, strays and skeletons can spawn here. This biome also generates kelp. Those biomes were much smaller and existed prior in Pocket Edition v0.9.0 alpha. This biome does not naturally generate, though it can be generated using a biome editor or add-ons.