"Unless you are planning to arm those sardines, all the cooperation in
the world isn't going to keep that
shark/dolphin/codfish/haddock/pollock from eating his fill. (Wait a
minute, sardines don't have arms....)"

How about the piranhas??? We can arm sardines with similar teeth and...
Wait a minute, we are talking NONVIOLENCE!

We can have a system by which the sardines know all the time where the
predators are, similar to the bell on the cat that saves the mice.
Well, I don't know if it works under water as well.

(if you are wandering where these posts come from
see...http://www.paddling.net/message/show...=341005#344207)