What is the sea like in Zhoushan?

Zhoushan's sea water is blue and yellow! Because the East China Sea is close to the mouth of the sea, the seawater in Zhoushan Island is generally yellow, and it is blue only when it reaches Putuo Dongji Island, Shengsi Flower and Bird Island, Gouqi Island and Shengshan Island!

So the water near Zhoushan is yellow, and the deep water is blue!