Mercury (hg) is a heavy metal that can damage the nervous system. consumption of foods containing mercury is of particular concern for pregnant women, as the developing nervous system of the fetus is quite susceptible to damage from mercury. in addition, children exposed to mercury in utero may have delayed development and lower scores on standardized tests. methyl mercury biomagnifies in living tissues and is most prevalent in marine food chains. based on the simple marine food chain above, what fish would you advise a pregnant friend to eat regularly? what fish or shellfish would you advise her to avoid?