How many fish died in world war 2?

It is difficult to quantify the exact number of fish that died as a direct result of World War II, as there are no comprehensive records on marine life casualties from the conflict. The war led to significant environmental impacts, including pollution from naval operations and bombings that could have harmed marine ecosystems. Additionally, the destruction of habitats and overfishing during wartime could have contributed to fish mortality. However, specific figures remain largely undocumented.