Partly this, it seems:
“In Huntington Beach, about 107 million gallons of seawater a day would be used to produce about 50 million gallons of drinking water.
“However, this would leave behind about 57 million gallons of brine — highly concentrated saltwater — that would be diffused while being sent back into the ocean.
...
“The facility, in total, would kill marine life in about 100 billion gallons of seawater per year,” a report by the staff of the California Coastal Commission states.”
I'd want to know more, like what have been the implications of other similar plants that operate around the globe. This stat has nothing to compare with it.
So, does that mean one could no longer catch croaker, tom cod, or other ‘trash fish’ from the Huntington pier? Horrors!/sar