The function of futures and forward trading is to reduce the risk caused by price fluctuation, so it is not applicable to the situation that seafood culture encounters red tide.
When your seafood culture encounters red tide, there are two ways to reduce the loss.
First: everyone else has encountered a red tide, so the seafood production has decreased, so the price has increased.
Second: you can ask the government for help when you meet in your area. Because this is a natural disaster after all, the government has the responsibility to provide farmers with risk shelters.