Minecraft wiki entry for Cod, associated text: A cod cannot survive outside of water. Outside of water, they flip around on their sides like guardians for a while trying to get back into the water until, after 10 seconds of time, they eventually start taking suffocation damage and die like squid. In Bedrock Edition, they rotate when flipping when out of water. They cannot swim or breathe in cauldron water.[1] They can swim in, but cannot survive in waterlogged blocks, most noticeably waterlogged slabs and stairs.