Ancient Hawaiian fishponds are a good example of aquaculture at its finest.
Hawaiians are the only Polynesians known to harness the ocean’s bounty using brackish-water ponds near the ocean for stocking and harvesting fish. The system allowed Hawaiians to control algae, a major food source for fish.
During ancient times when the ponds were controlled by the ali‘i (chiefs), most of the fish were reserved for their consumption.
Only a few of the 100 or so fishponds that once existed on O‘ahu remain today. HE‘EIA FISHPOND is an 88-acre brackish-water pond that was in use as late as the 1950s.
Farther north on Kamehameha Highway is HUILUA FISHPOND, located on the east side of Kahana Bay. The pond is a National Historic Landmark and is usually only visible at low tide.