Here’s a great NY Times article on the subject:
Chicken of the Sea
FYI – I have been eating sushi, even raw stuff, for months now. Aaron and I agreed that I wouldn’t be putting our child at risk to eat sushi – why listen to the popular and fanatical opinion that I would certainly be killing our child by eating raw fish. I’m glad that there is finally a good article to back up our feelings on the matter.

I am making an effort to limit my intake of fish which contain higher mercury levels, but other than that, if it tastes good, I eat it!!