Hawaiian petrel Hawaiian petrel The Hawaiian petrel or uau ("Pterodroma sandwichensis") is a large, dark grey-brown and white petrel that is endemic to Hawaii. The Hawaiian petrel was formerly found on all the main Hawaiian Islands except Niihau, but today it is mostly restricted to Haleakalā crater on Maui; smaller populations exist on Mauna Loa on the island of Hawaii, Waimea Canyon on the island of Kauai, Lānaihale on Lānai, and possibly Molokai. It is also reportedly seen on the Galapagos Islands. Their diet consists of 50–75% squid, and smaller percentages of fish and crustaceans. The birds nest in burrows or rock
Channels of the Hawaiian Islands Molokaʻi Channel) separates the islands of Oʻahu and Molokaʻi, and is wide. Maximum depth is . There are annual paddleboarding and outrigger canoe paddling contests which traverse this channel. Ka Iwi means "the bone." The Kaʻieʻie Waho Channel separates the islands of Kauaʻi and Oʻahu, at a distance of . Kaʻieʻie Waho means "Outer Kaʻieʻie," named after the ʻieʻie vine ("Freycinetia arborea"). The maximum depth of the channel is over 11000 feet. The Kaulakahi Channel separates the islands of Niʻihau and Kauaʻi. It is wide. Kaulakahi translates to "the single flame (streak of color)." The Kumukahi Channel separates the islands