1.   Do all the fish die and what happens to the occupants of metal-hulled boats?

2.   The fish are dying of pollution.

3.   The fish are dying because of the chemicals from farms and factories.

4.   Although the fish may not die from the levels of toxics, they allow the metals to be detected in laboratory tests, he said.

5.   Anderson of the University of Washington says that there is not enough research to show if barged fish die in much greater numbers than others.

6.   Biologists said the young fish would have died in captivity anyway because hatcheries lack facilities to raise salmon to adulthood.

7.   After the fish died, it was frozen for analysis.

8.   But after fish die and fall to the ocean bottom, the molecular structure of the teeth begins to change.

9.   Fish are dying.

10.   It was impossible to say how many fish would die, but clearly tens of thousands had been stricken since the outbreak was detected late Saturday.