Sophisticated fish ponds fed a dense population in Hawai‘i

Hawaiians developed elaborate aquaculture and agricultural systems, including fish ponds, that fed a dense population before European arrival. “They were a sustainable way of  creating food for the population and quite a beautiful engineering design,” said Kiana Frank, an assistant research professor at the Pacific Biosciences Research Center​ (PBRC).

Fish ponds were constructed in estuaries. Dykes built of rock and earth enclosed part of an estuary and sluice gates allowed fresh and salt water — and the nutrients they carried — to enter and exit with the tides. The gates also allowed young fish, especially mullet, to enter the ponds and eat micro-organisms that the Hawaiians encouraged.

Read more about it in The Press.