Maunalua (Hawaii Kai) is a largely residential area located in the City & County of Honolulu, in the East Honolulu CDP, on the island of Oʻahu. Maunalua, (Hawaii Kai) is the largest of several communities at the eastern end of the island. The area was largely developed by Henry J. Kaiser around the ancient Maunalua fishpond and wetlands area known as Kuapā (meaning "fishpond wall"). The Hawaiʻi Kai or Koko Marina was dredged from Kuapā Pond starting around 1959. Dredging not only transformed the shallow coastal inlet and wetlands into a marine embayment, but was accompanied by considerable filling and clearing of the pond margins. In 1961, Kaiser-Aetna entered into a lease agreement with the land owner, the Bernice Pauahi Bishop Estate, to develop the 521 acre (2.11 km2) fishpond into residential tracts with a marina and channels separated by fingers of land and islands upon which house lots and commercial properties would be laid out and developed. Nearly all of the low-lying lands surrounding the marina have since been developed, and neighborhoods now extend back into the several valleys and up the separating ridges.