Could all those animals in our planet's gigantic seas - from tiny plankton and krill to mighty (but relatively rare) whales - play a major role in how the waters themselves mix and move? It used to be no one thought so, but researchers studying jellies (a.k.a. jellyfish) report that we've apparently missed something important here. One said, "There are enough of these animals in the ocean that, on the whole, the global power input from this process is as much as a trillion watts of energy — comparable to that of wind forcing and tidal forcing."
COMMENT: Nature and its processes consistently prove to be more subtle and complex than we think - and that's important to keep in mind when we are making decisions on everything from pollution control to climate change.