If it's in the freezer, you can eat it. If it is in the cold room, it is recommended not to eat it.

Flower nails normally need to live in water at degrees. If they are kept in the freezer, the environment at 4~1 degrees is not suitable. It is ok to keep them for a short time, and it is a little long for one day. It is normal for the flower to open its mouth in the water, and it may be spitting sand.

Extended information:

There are many pathogens and toxins in dead shellfish:

Shellfish itself carries a relatively high amount of bacteria, and protein decomposes quickly. Once it dies, it will breed a large number of bacteria and produce toxins, and the unsaturated fatty acids contained in it are also prone to oxidative rancidity.

stale shellfish also produce more amines and free radicals, which pose a threat to human health.

after purchasing live shellfish, you should not store them at home for too long, and cook them as soon as possible.

people with allergies should pay special attention, because sometimes allergic reactions are not caused by seafood itself, but by substances during the protein decomposition of seafood.

Reference: Baidu Encyclopedia-Seafood