Changshu crabs came ashore in groups to attract villagers to pick them up. Although this phenomenon has never happened for many years, these crabs belong to the Yangtze River wild hairy crabs. Although it is not big, it is a veritable wild crab, and its delicacy is incomparable to cultured crabs. So, these crabs are edible. Whether it is steamed, fried or pickled depends on personal preference. The number of these crabs on the shore has reached tens of thousands. Such a mighty team has aroused many imaginations from the outside world. Many netizens say that crab landing is not a good phenomenon, and it may be a sign of an earthquake. Some netizens also said that it has nothing to do with the earthquake, but the water quality problem. Whatever the reason, as long as they can eat these crabs, the people in Changshu will be very satisfied. After all, the price of crabs is still very high, and the joy of finding free crabs is incomparable.

Because something unusual happened, these crabs said they went ashore. Although some people enthusiastically pick it up, they still have doubts about whether they can eat it or not. In fact, these crabs are not inedible. The main reason why these crabs landed is not the earthquake, but the following reasons:

1, water temperature is abnormal.

The growth environment of crabs should be stable and not too changeable. If the growth environment of crabs changes too much, what will happen to crabs? Crisis? Immediately abandon the present living environment, choose to go ashore and find another place to settle down.

2. Hypoxia

When the weather is rainy or unusually hot, the oxygen in the book will be consumed. In this case, the crab will find it difficult to survive and go ashore naturally to prevent suffocation in the water.

The water quality is getting worse and worse.

What needs to be clear is that crab is actually a lazy seafood. Although it has many legs, it is actually very dependent on the environment. In other words, it will not change places when the water quality is acceptable. Crabs only go ashore when the water quality becomes worse and they can't stay any longer.