Concept

Kawainui Marsh

Résumé
Kawainui Marsh or Kawainui Fishpond is a wetland and former fishpond in Kailua, Hawaiʻi. It is the largest remaining wetland and the largest ancient freshwater fishpond in Hawaiʻi, and a designated Ramsar Convention wetland. Prehistory and Polynesian arrival Geologic evidence such as core samples containing coral suggest that Kawainui was a wide, shallow bay in prehistory. Its water content peaked 1500 BCE, at which point a barrier reef likely grew between the bay and the Pacific Ocean, but did not fully separate the two. Erosion from waves can be seen in certain areas at the edges of the marsh as it exists today, near Nā Pōhaku o Hauwahine. By about 500 CE, sea level had lowered to roughly the current level, exposing much of the barrier reef. The reef blocked much of the flow of water between the bay and the ocean, causing the bay to become shallower and brackish. Kawainui had effectively become a lagoon, connected to nearby Kaʻelepulu Pond by natural channels. Polynesian
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