Mercury concentration of the sedentary fishes in Minamata Bay in 1985
Methylmercury in sea water is taken into aquatic animals through gill or
On the other hand, the concentration of mercury tends to be higher as the
trophic ranking be higher.
It is called bio-accumulation.
The figure shows relation between trophic ranking mercury level of sedentary
fishes in Minamata Bay when mercury-polluted sludge still remained in the