> > What type of tuna? In a NY Times article a couple weeks back they
pointed
> > out that albacore tuna (sold as white tuna) has more mercury than light
> > tuna, which comes from smaller fish. In the white it was 0.5 parts per
> > million. and in light it was 0.13.
>
> That would pretty-much confirm something I read, somewhere...the larger
the
> fish, the longer it has been exposed to mercury in the ocean.

Yes.  Larger, predatory fish have lived longer and bioaccululated more
mercury from their prey.  Mercury is uniformly distributed throughout the
organs and flesh in fish; whereas organic contaminants (like PCBs) and
preferentially stored in fat in fish.

Rob