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Kāne’ohe Bay

Kāne’ohe Bay is the largest sheltered body of water in the main Hawaiian Islands. This reef-dominated bay constitutes a significant scenic and recreational feature along the island’s windward (northeast).  The largest population center on Kāne’ohe Bay is the town of Kāne’ohe.

The Bay is approximately 8 mi long and 2.7 mi broad, with a mouth opening of about 4.6 mi  and maximum depth of 40 ft in the dredged channel. Features unique in the main Hawaiian Islands include one of only two barrier reefs (the other being the 27 mile barrier reef of Moloka’i island) and extensive development of shoaling coral reefs within a large lagoon. Two navigable channels cut across the northern and southern ends of the barrier reef. The deeper, northern channel, located off Kualoa Beach Park, provides entrance from the North Pacific Ocean to a ship channel dredged the length of the lagoon between 1939 and 1945. The lagoon contains extensive patch and fringing reefs and its southern end is partly enclosed by the Mokapu Peninsula. This peninsula is occupied by Marine Corps Base Hawaii.

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