My friend Pam and I went on a hike there last week. Fog was still hanging on to the water, and there wasn't as many birds as we expected, but it is still a nice place to be.
A coastal lagoon is a shallow body of salt water that is hydrologically connected to both an upland stream and the ocean. This interface between salt and fresh water creates an ecology unique to lagoons because they are both nutrient rich and sheltered (protected from wave action).
Now it is home to many plants, birds, and fish. But this was not always the case. During much of the 20th century, transportation routes built across the mouth of the lagoon cut the lagoon off from the ocean. With the connection to the ocean lost, the lagoon's water became less salty and sediment began to accumulate, reducing the lagoon's habitat value for plant and wildlife species.
The Port of Los Angeles began a project in 1989 to restore Batiquitos Lagoon to mitigate for the loss of deepwater fish habitat, caused by channel improvements and construction of land for cargo terminals in the Outer Los Angeles Harbor, in San Pedro Bay.
The restoration has been biologically successful and the construction of new land and cargo terminals at the Port of Los Angeles has been economically beneficial. Los Angeles got new ship terminals while San Diego got a Nature Preserve. Seems to me we got the better deal!