A Series of aerial remote sensing experiments were conducted from May 16 to 19, 1980 by Academia Sinica in the Bohai Bay to monitor pollution effect, the first one being made on May 16, 1980. Sea water spectral radiances were measured by a 101 W spectral radiance meter aboard a Meeg~8 helicopter, sea truth measurements and sampling were made from four boats. These sea truth measurements include suspended sediments, chlorophyll concentrations, water color and other water quality parameters. Stepwise Regression Analysis; was, used to determine regression equations relating the sea truth measurements (include suspended sediments and chlorophyll a concentrations and water color etc.) to sea water reflectances. Spectral reflectance data at 760 nm were used for countirig suspended sediments; for chlorophyll a, data at 480 nm, 620nm, .740 nm were used; for watet color data at 740 nm were used. The correlation coefficierits (measutenient of relative change between remotely sensed data and sea truth measurements) were about 0.7.