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The Bay is approximately 8 mi (13 km) long and 2.7 mi (4.3 km) wide, with a mouth opening of about 4.6 mi (7.4 km) wide and a maximum depth of 40 ft (12 m) in the dredged channel. It has one of the two barrier reefs in the archipelago, the other being the 27 mi (43 km) barrier reef of Molokaʻi island , and also has extensive development of ...
A composite satellite image from NASA of the Hawaiian Islands taken from outer space. Click on the image for a larger view that shows the main islands and the extended archipelago. Partial islands, atolls, reefs—those west of Niʻihau are uninhabited except Midway Atoll—form the Northwestern Hawaiian Islands (Leeward Islands): Nihoa (Mokumana)
It was discovered in 1820 by Captain Joseph Allen of the ship Maro, after whose ship the reef was named. With a total area of 747 square miles (1,935 km 2), it is the largest coral reef in the Northwestern Hawaiian Islands. It contains 37 species of stony coral. Unlike most atolls, the coral extends out from the center like spokes on a wheel.
Like the rest of the Hawaiian Islands, the atoll observes Hawaii Standard Time. In total, Pearl and Hermes has about 32 ha (80 acres) of land and almost 80,937 ha (200,000 acres) of coral reef habitat. [2] The fringing coral reef which surrounds the atoll is roughly 43 mi (69 km) in circumference and open to the west. [1]
The Northwestern Hawaiian Islands also known as the Leeward Hawaiian Islands, are a series of islands and atolls located northwest of Kauai and Niʻihau in the Hawaiian island chain. Politically, these islands are part of Honolulu County in the U.S. state of Hawaii , with the exception of Midway Atoll .
Red pencil urchin – Papahānaumokuākea. The Papahānaumokuākea Marine National Monument (PMNM) (roughly / p ɑː p ɑː ˈ h ɑː n aʊ m oʊ k u ˌ ɑː k eɪ. ə / [2]) is a World Heritage listed U.S. national monument encompassing 583,000 square miles (1,510,000 km 2) of ocean waters, including ten islands and atolls of the Northwestern Hawaiian Islands.
Northwestern Hawaiian Islands 23°26′44″N 166°50′46″W / 23.4456°N 166.846°W / 23.4456; -166 This is a 32-kilometre (20 mi; 17 nmi) long, crescent-shaped reef maintained by the United States Fish and Wildlife Service as a field station within the Papahānaumokuākea Marine National Monument .
Kingman Reef (/ ˈ k ɪ ŋ m ən /) is a largely submerged, uninhabited, triangle-shaped reef, geologically an atoll, 9.0 nmi (20 km) east-west and 4.5 nmi (8 km) north-south, [2] in the North Pacific Ocean, roughly halfway between the Hawaiian Islands and American Samoa.