- published: 12 May 2015
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Pearl Harbor, known to Hawaiians as Puʻuloa, is a lagoon harbor on the island of Oʻahu, Hawaiʻi, west of Honolulu. Much of the harbor and surrounding lands is a United States Navy deep-water naval base. It is also the headquarters of the U.S. Pacific Fleet. The attack on Pearl Harbor by the Empire of Japan on Sunday, December 7, 1941, brought the United States into World War II.
Pearl Harbor was originally an extensive deep embayment called Wai Nomi (meaning, “pearl water”) or Puʻuloa (meaning, “long hill”) by the Hawaiians. Puʻuloa was regarded as the neighbor of the dolphin god, Kaʻahupahau, and his brother (or dad), Kahiʻuka, in Hawaiian legends. According to tradition, Keaunui, the head of the powerful Ewu chiefs, is credited with cutting a navigable channel near the present Puʻuloa saltworks, by which made the estuary, known as “Pearl Lake,” accessible to navigation. Making due allowance for legendary amplification, the estuary already had an outlet for its waters where the present gap is; but Keaunui is typically given the credit for widening and deepening it.
A pearl is a hard object produced within the soft tissue (specifically the mantle) of a living shelled mollusk. Just like the shell of a mollusk, a pearl is made up of calcium carbonate in minute crystalline form, which has been deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other shapes of pearls (baroque pearls) occur. The finest quality natural pearls have been highly valued as gemstones and objects of beauty for many centuries, and because of this, the word pearl has become a metaphor for something very rare, fine, admirable, and valuable.
The most valuable pearls occur spontaneously in the wild, but they are extremely rare. These wild pearls are referred to as natural pearls. Cultured or farmed pearls from pearl oysters and freshwater mussels make up the majority of those that are currently sold. Imitation pearls are also widely sold in inexpensive jewelry, but the quality of their iridescence is usually very poor, and generally speaking, artificial pearls are easily distinguished from genuine pearls. Pearls have been harvested and cultivated primarily for use in jewelry, but in the past they were also stitched onto lavish clothing. Pearls have also been crushed and used in cosmetics, medicines, and in paint formulations.
A harbor or harbour (see spelling differences), or haven, is a place where ships, boats, and barges can seek shelter through stormy weather, or else are stored for future use. Harbors can be natural or artificial. An artificial harbor has deliberately-constructed breakwaters, sea walls, or jettys, or otherwise, they could have been constructed by dredging, and these require maintenance by further periodic dredging. An example of the former kind is at Long Beach Harbor, California, and an example of the latter kind is San Diego Harbor, California, which was, under natural conditions, too shallow for modern merchant ships and warships.
In contrast, a natural harbor is surrounded on several sides by prominences of land. An example of this kind of harbor is San Francisco Bay, California.
Harbors and ports are often confused with each other. A port is a facility for loading and unloading vessels; ports are usually located in harbors.
Artificial harbors are frequently built for use as ports. The largest artificially created harbor is Jebel Ali in Dubai. Other large and busy artificial harbors are located at: Rotterdam, The Netherlands; Port of Houston, Texas; Port of Long Beach, California; and Port of Los Angeles in San Pedro, California.