And this is one more present from nature located in California. It's called Red Tide and it's a common name for a phenomenon known as an algal bloom that we also saw in Paradise River (Columbia).
This algae (phytoplankton) are single-celled protists. Plant-like organ that can form dense, visible patches near the water surface. Certain species of this algae contains photosynthetic pigments that vary in color from green to brown to red (pink) and gives incredible view for humans eye. 
Unfortunately yes, even if its so beautiful to watch this amazing natural phenomenon...In some cases, even humans have been harmed by red tides though no human exposure are known to have been fatal. While they can be fatal, the constituent phytoplankton in red tides are not harmful in small numbers....
"And the Lord spoke unto Moses, “Say unto Aaron, ‘Take thy rod and stretch out thine hand upon the waters of Egypt, upon their streams, upon their rivers, and upon their ponds, and upon all their pools of water, that they may become blood; and that there may be blood throughout all the land of Egypt, both in vessels of wood and in vessels of stone.’
ReplyDelete"And Moses and Aaron did so, as the Lord commanded; and he lifted up the rod and smote the waters that were in the river, in the sight of Pharaoh and in the sight of his servants; and all the waters that were in the river were turned to blood.
"And the fish that were in the river died; and the river stank, and the Egyptians could not drink of the water of the river; and there was blood throughout all the land of Egypt..."