Tide: Zach Hughes

An experiment in radiation treatment of fish produces mutations in the dinoflagellates that feed the fish. The result is aggressive fish - toward other fish and toward Man. But there's a bigger problem - the aggressiveness is transferred to men who eat the fish and violence explodes in the quiet laboratories. This is ugly - but then the mutation reaches an Air Force general with access to codes for nuclear bombs. The destruction of all life could be only a countdown away....