 Perhaps the most significant economic impact of the Exxon Valdez disaster-the collapse of the Herring fishery, only collapsed four years after the spill, and to this day is not showing signs of recovery.This makes the kind of long-term focused program Ocean Alliance conducted all the more important.Preliminary analysis has shown potentially damaging levels of genotoxic metals including chromium and nickel in Sperm whales living in the area, significantly higher than the global average.