What will the earth look like if the ocean temperature rises by 1 1 degree?

A large number of marine life will be extinct, and a large number of water vapor will also appear with the increase of seawater temperature, thus causing changes in the earth's climate. It will even melt the ice in the north and south poles, so extreme weather changes are likely to occur on the earth, such as extremely cold or hot weather. I think there will probably be a very big natural disaster on the earth at that time.