Finally…Let me summarize by saying
In summary, I’ve explained the Herd of jellyfish in the ocean that brought together of become a problem in many areas.
so,clearly that what’s happening to the oceans is really really bad.
The Sewage can cause Eutrophication to increase of plankton blooms.
That reduce the water's oxygen content.
Then to provides more food for favors jellyfish.
Then jellyfish can cope far better with these poor water quality .
But induces reductions in specific fish and other animal populations.