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
Calamba, Laguna in Calamba and this geographic position makes the city a gateway to the southern provinces of Luzon. The highway at the end of the South Luzon Expressway leads east to the other towns of Laguna and south towards the provinces of Batangas and Quezon. Calamba City is bordered by Cabuyao City to the north, Los Baños to the east, by the province of Batangas to the south, specifically the municipalities of Santo Tomas, Tanauan City and Talisay, and by the province of Cavite to the west, with Tagaytay City and Silang. Laguna de Bay the country's largest lake, forms the