Hawaiian Trough the Hawaiian Arch. The Hawaiian Arch extends about 200 meters above the surrounding ocean floor, and contains tilted coral reefs. The coral reefs in the Hawaiian Tough are described as mesophotic coral ecosystems, which can be found between 100 and 500 feet below sea level. 43 percent of fish species documented at the mesophotic reefs are unique to the Hawaiian Islands. At Maui’s ‘Au’au channel the largest uninterrupted mesophotic coral ecosystem was discovered, with an area larger than 3 square miles. These reefs contained many stony, reef building coral that belong to the genus Leptoseris, which are adapted for deep
Rulers of the Hawaiian Islands Rulers of the Hawaiian Islands The rulers of the Hawaiian islands ("noho aliʻi o ko Hawaiʻi Pae ʻAina") are a line of native Hawaiians who were independent rulers of various subdivisions of the land and islands of Hawaii. Their genealogy is traced to Hānalaʻanui and others. The caste system of ancient Hawaiian society was established around 1200 AD and separated the people into 4 distinct ranks that were all below the supreme ruler ("ali‘i nui") of the island. The "ali‘i nui" would distribute the land to the lower ranking chiefs who would run the land and collect offerings and taxes.