Mission Bay Park

Mission Bay is an artificial, saltwater bay located south of the Pacific Beach community of San Diego, California created from approximately 2,000 acres of historical wetland, marsh, and saltwater bay habitat. The bay is part of the recreational Mission Bay Park, the largest man-made aquatic park in the United States, consisting of 4,235 acres, approximately 46% land and 54% water. The combined area makes Mission Bay Park the ninth largest municipally-owned park in the United States.

The bay was created to enhance recreational opportunities in San Diego, but doing so has fundamentally altered the ecology of San Diego county by removing all but 40 acres, or approximately 5%, of wetland habitat. Wakeboarding, jet skiing, sailing, camping, cycling, jogging, roller skating and skateboarding, or sunbathing are all popular around the bay.

Source: Wikipedia