We all know that fishing removes big fish so that we're left with oceans of small fish.
But did you know that the same thing is true for other animals and even for plants? Human impacts make many plants and animals develop reduced size. No, not because of fishing, but because of a lot of things people do. This is even true for small animals that we don't hunt, including the green clock beetle from Europe, where habitat damage favors shorter larval stages and reduced body size.
Soon we'll be living in "bonsai world."