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
Coins of the Hawaiian dollar center with the issuer's name at top and "HALE MAIKAI" - meaning house excellent, or a good place to do business - below. The token was known as "hale meli" in Hawaiian, recalling the beehive on the reverse. Coins of the Hawaiian dollar In 1847, the Kingdom of Hawaiʻi, under the reign of King Kamehaheha III, issued its first official coinage—a large one-cent copper penny—to alleviate the chronic shortage of small denomination coins circulating in the Hawaiian Islands. The next and last official coinage of the Hawaiian Islands was minted in 1883, by King Kalākaua I; however during the intervening