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Santa Monica Bay is a bight of the
Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...
in
Southern California Southern California (commonly shortened to SoCal) is a geographic and Cultural area, cultural List of regions of California, region that generally comprises the southern portion of the U.S. state of California. Its densely populated coastal reg ...
, United States. Its boundaries are slightly ambiguous, but it is generally considered to be the part of the Pacific within an imaginary line drawn between Point Dume, in Malibu, and the
Palos Verdes Peninsula The Palos Verdes Peninsula () is a peninsular subregion of the Los Angeles metropolitan area, located within southwestern Los Angeles County, California. It is often called simply "Palos Verdes", and is made up of a group of cities in the Palos ...
. Its eastern shore forms the western boundary of the Los Angeles Westside and South Bay regions. Although it was fed by the
Los Angeles River The Los Angeles River (), historically known as by the Tongva and the by the Spanish, is a major river in Los Angeles County, California. Its headwaters are in the Simi Hills and Santa Susana Mountains, and it flows nearly from Canoga Park ...
until the river's catastrophic change of course in 1825, the only stream of any size now flowing into it is Ballona Creek. Smaller waterways draining into the bay include Malibu Creek, Topanga Creek, and Santa Monica Creek. The Santa Monica Bay is home to some of the most famous beaches in the world, including Malibu Lagoon State Beach (Surfrider), Will Rogers State Beach, Santa Monica State Beach, and Dockweiler State Beach. Several piers extend into the bay, including Malibu Pier, Santa Monica Pier, Venice Pier, Manhattan Beach Pier,
Hermosa Beach Pier The Hermosa Beach Pier is located in the Southern California community of Hermosa Beach. It extends into the Pacific Ocean. In 1904 the first pier was built. It was constructed entirely of wood even to the pilings and it extended five hundr ...
, and the Redondo Beach pier. Marina Del Rey is a dredged marina. The bay is a very popular fishing destination year-round.


History

In the 1930s,
gambling ship A gambling ship is the term for a ship stationed offshore in or transiting to international waters to evade local anti-gambling laws that is dedicated to games of chance. This applies both to ships which are permanently moored somewhere outside ...
s anchored beyond the regulated three-mile limit, then kept measured from the beach. The ships were popular, and a fleet of ever-larger ships and barges appeared until the State Attorney General recalculated the limit to exclude the bay. The largest ship held the state police off for nine days with
submachine gun A submachine gun (SMG) is a magazine (firearms), magazine-fed automatic firearm, automatic carbine designed to fire handgun cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, to descri ...
s in what the newspapers called '' The Battle of Santa Monica Bay''. Once a major commercial
fishery Fishery can mean either the enterprise of raising or harvesting fish and other aquatic life or, more commonly, the site where such enterprise takes place ( a.k.a., fishing grounds). Commercial fisheries include wild fisheries and fish far ...
, Santa Monica Bay's water quality declined drastically in the 20th century as development of
Los Angeles County Los Angeles County, officially the County of Los Angeles and sometimes abbreviated as LA County, is the most populous county in the United States, with 9,663,345 residents estimated in 2023. Its population is greater than that of 40 individua ...
resulted in large amounts of
sewage Sewage (or domestic sewage, domestic wastewater, municipal wastewater) is a type of wastewater that is produced by a community of people. It is typically transported through a sewerage, sewer system. Sewage consists of wastewater discharged fro ...
and trash-rich storm runoff being dumped into its waters. Through restoration projects mandated by the
Clean Water Act The Clean Water Act (CWA) is the primary federal law in the United States governing water pollution. Its objective is to restore and maintain the chemical, physical, and biological integrity of the nation's waters; recognizing the primary respo ...
and advocated by groups such as Heal the Bay and the Surfrider Foundation, the bay's water quality has improved fairly dramatically from its early-1980s nadir. Hyperion sewage treatment plant's output is now far cleaner than before. However, during the region's rainy winters, the bay suffers from
algal bloom An algal bloom or algae bloom is a rapid increase or accumulation in the population of algae in fresh water or marine water systems. It is often recognized by the discoloration in the water from the algae's pigments. The term ''algae'' encompass ...
and other
water pollution Water pollution (or aquatic pollution) is the contamination of Body of water, water bodies, with a negative impact on their uses. It is usually a result of human activities. Water bodies include lakes, rivers, oceans, aquifers, reservoirs and ...
-related maladies, periodically forcing most of the famous beaches along its shore to close. On January 13, 1969, Scandinavian Airlines System Flight 933 crashed into the bay while on approach to
Los Angeles International Airport Los Angeles International Airport is the primary international airport serving Los Angeles and its Greater Los Angeles, surrounding metropolitan area, in the U.S. state of California. LAX is located in the Westchester, Los Angeles, Westcheste ...
, killing 15 of the 45 people on board. Five days later on January 18, United Airlines Flight 266 crashed into the bay after takeoff from the same airport, killing all 38 people on board. In 1990, actor Wallace Reid Jr. was killed when his homebuilt plane crashed in the bay amid heavy fog. In 2006, game show host Peter Tomarken and his wife Kathleen were killed in a plane crash into the bay. They were heading to
San Diego San Diego ( , ) is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. With a population of over 1.4 million, it is the List of United States cities by population, eighth-most populous city in t ...
to pick up a cancer patient who needed transportation to UCLA Medical Center for treatment when their airplane crashed. Since 2022, The Ocean Cleanup has been operating a cleanup system in Ballona Creek to prevent plastic and other solid waste from leaking into the bay.


Communities and settlements

* El Porto * El Segundo *
Hermosa Beach Hermosa Beach (, Spanish language, Spanish for "Beautiful") is a beachfront city in Los Angeles County, California, United States. Its population was 19,728 at the 2020 United States census, 2020 U.S. Census. The city is located in the South Ba ...
* Malibu * Manhattan Beach and
Bruce's Beach Bruce's Beach was an African-American beach resort at Manhattan Beach, California, Manhattan Beach in Los Angeles County, California. The property, which was located at 26th Street and Highland Avenue, was owned and operated by Charles and Will ...
* Marina del Rey * Pacific Palisades * Palos Verdes Estates * Playa del Rey * Rancho Palos Verdes *
Redondo Beach Redondo Beach (Spanish for ) is a coastal city in Los Angeles County, California, United States, located in the South Bay region of the Greater Los Angeles area. It is one of three adjacent beach cities along the southern portion of Santa Mo ...
*
Santa Monica Santa Monica (; Spanish language, Spanish: ''Santa Mónica'') is a city in Los Angeles County, California, Los Angeles County, situated along Santa Monica Bay on California's South Coast (California), South Coast. Santa Monica's 2020 United Sta ...
* Torrance *
Venice Venice ( ; ; , formerly ) is a city in northeastern Italy and the capital of the Veneto Regions of Italy, region. It is built on a group of 118 islands that are separated by expanses of open water and by canals; portions of the city are li ...


See also


References


External links


Heal the BayEPA Santa Monica Bay Watershed Profile
{{Authority control Bays of California Bodies of water of Los Angeles County, California Bights (geography) Geography of Los Angeles South Bay, Los Angeles Westside (Los Angeles County) Tourist attractions in Los Angeles County, California