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
Culture of the Cook Islands cassettes and CDs. Radio programs in the islands are broadcast in the native language, English and Tahitian. The music of the Cook Islands is characterised by heavy drums and ukuleles. Men perform the "hura", which is the equivalent of the Hawaiian "hula", locking their feet on the ground and keeping their shoulders steady. Drums form part of an ensemble. Performing groups include the Cook Islands National Arts Theatre, Arorangi Dance Troupe, Betela Dance Troupe, Akirata Folk Dance Troupe, and Te Ivi Maori Cultural Dance Troupe. Raro Records is the main specialist in music retail on the islands. Dances are performed