Interesting tweets at the link.
Soils in the Osaka area are primarily yellow clays and they had some significant rainfall of late. I’metting on surface water runoff coloring the bay. I live near a large somewhat enclosed saltwater body, and the water color is significantly influenced by runoff - most folks never pay attention,so when it’s pointed out they assume something terrible has happened.
Is this a part of the Yellow Sea? /sarc
ping...