Reply to comment

Think about it...

Whales eat plankton, right? So if all the whales were wiped out, there would be an excess of plankton. The plankton would eat all plants etc., leaving none for any other fish. The smaller fishes that depend on plants would starve to death. Then the bigger fishes would die as well, as they depend on eating the little fish. Next to go would be the sharks and dolphins etc., until the sudden 'shift' (as you call it)would move onto land. For example, the bears that eat fish would have nothing, and die as well. Eventually, there would be nothing left for us as humans to eat, and we too would starve. The environment wouldn't really be re-adjusting to the change, it would just die.