This is what I've thought about for the longest time. Imagine the fishes getting killed by depth charges and torpedo blasts. The bombs landing on land and cratering it, killing the burrowing rabbits, insects and other underground creatures. I've always wondered if we have inadvertently killed animals that could have compounds with medicinal value, or just extincted a rare animal, by war. These animals would have no idea what's going on. The bullets, bombs, planes and tanks are like spacecraft for them, as we would view of spacecrafts lasering us from heaven.