Laguna (province) producing of fish. Carp and tilapia fingerlings are also being grown in inland ponds and freshwater fish pens. There are a total of 457 operators utilizing an area of for fish pens and fish cages. Aside from the Laguna de Bay, approximately 12% of the area in the Seven Lakes of San Pablo is being used for aquaculture. Laguna is home to twenty-one economic zones as registered under the Philippine Economic Zone Authority. Most of these economic zones are located in Santa Rosa, Biñan, and Calamba. The largest economic zone in Laguna is the Laguna Technopark, located in Santa Rosa
Laguna Lake (California) winter. Laguna Lake (California) Laguna Lake is a shallow natural lake at the head of the Chileno Valley. Although Laguna Lake is officially classified as a vernal pool, it retains some water year round. The 200-acre lake is wide and long, straddling the Sonoma-Marin county line in northern California, United States. It is the source of Chileno Creek which flows west to Walker Creek. It was included in the Rancho Laguna de San Antonio Mexican land grant, which was given to Bartolomé Bojorquez in 1845. Laguna Lake is used extensively for migrating and breeding waterfowl, including whistling swans ("Cygnus columbianus")