Pollution in Punggol Sea

The Punggol sea is very dirty this morning.  It is oily and smells bad.  No fishes at all.  However in the evening, high tide and the water is clean.  So plenty of fishes!  The tides help clear the pollution.  The ships must have clean their oil bunkers and discharge the dirty water into the sea.  I am glad due to the tide clean water comes back in.  Big schools of anchovies or at least I think they are anchovies.  It will be nice to get a cast net to catch the fishes.