Cold Ocean Ruins

Cold Ocean Ruins is a variant of Ocean Ruins. It's a underwater structures primarily composed of stone bricks. They are found in ocean biomes and rarely on beaches, and are inhabited by drowned and sometimes zombie nautiluses alongside them. They contain chest and suspicious gravel that contain a variety of loot, notably the buried treasure map and the sniffer egg.

Cold ocean ruins generate in normal, cold, and frozen ocean biomes or in their deep variants. They are composed of stone materials and contain some suspicious gravel blocks that can be excavated using a brush.

Ocean ruins may at times be at least partially buried, including with their airspaces. During generation, all air blocks and structure blocks act as structure voids. This means that their associated suspicious blocks are also located under layers of usual gravel, and even stone.