![Californian Channel Islands map en](https://upload.wikimedia.org/wikipedia/commons/f/f3/Californian_Channel_Islands_map_en.png)
San Clemente Island (
Tongva
The Tongva ( ) are an Indigenous people of California from the Los Angeles Basin and the Southern Channel Islands, an area covering approximately . Some descendants of the people prefer Kizh as an endonym that, they argue, is more historically ...
: ''Kinkipar'';
Spanish
Spanish might refer to:
* Items from or related to Spain:
**Spaniards are a nation and ethnic group indigenous to Spain
**Spanish language, spoken in Spain and many Latin American countries
**Spanish cuisine
Other places
* Spanish, Ontario, Can ...
: ''Isla de San Clemente'') is the southernmost of the
Channel Islands of California
The Channel Islands () are an eight-island archipelago located within the Southern California Bight in the Pacific Ocean, off the coast of California. The four Northern Channel Islands are part of the Transverse Ranges geologic province, and ...
. It is owned and operated by the
United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
,
and is a part of
Los Angeles County
Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the most populous county in the United States and in the U.S. state of California, with 9,861,224 residents estimated as of 2022. It is the ...
. It is administered by
Naval Base Coronado
Naval Base Coronado (NBC) is a consolidated Navy installation encompassing eight military facilities stretching from San Clemente Island, located seventy miles west of San Diego, California, in Los Angeles County, California, to the Mountain Warfa ...
. It is long
and has of land. The 2018 census estimates 148 military and civilian personnel reside on the island. The city of
San Clemente
San Clemente (; Spanish for " St. Clement") is a city in Orange County, California. Located in the Orange Coast region of the South Coast of California, San Clemente's population was 64,293 in at the 2020 census. Situated roughly midway betwee ...
in
Orange County, California
Orange County is located in the Los Angeles metropolitan area in Southern California. As of the 2020 census, the population was 3,186,989, making it the third-most-populous county in California, the sixth-most-populous in the United States, a ...
is named after the island.
Geography
Topography
Geologically, the island is described as being "the upper part of a tilted and gently arched northwestward-trending block of the earth's crust that has a straight, steep northeastern slope and a more irregular and much gentler southwestern slope" that is composed primarily of volcanic rock, with the northeast boundary of the island having a large fault that parallels most of the major faults on the California mainland. San Clemente Island has some of the best examples of marine terraces, and has trench-like canyons, streams, periodic waterfalls, and pools of fresh water.
Climate
This region experiences warm and dry summers and moderate mild falls and winters with no average monthly temperature above 21 °C (69.5 °F). According to the
Köppen Climate Classification
The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, notabl ...
system, San Clemente Island has a
warm-summer Mediterranean climate
A Mediterranean climate (also called a dry summer temperate climate ''Cs'') is a temperate climate sub-type, generally characterized by warm, dry summers and mild, fairly wet winters; these weather conditions are typically experienced in the ...
, abbreviated "Csb" on climate maps.
Ecology
Fauna and flora
The
San Clemente Island loggerhead shrike is an
endangered species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and inv ...
that the Navy is taking steps to protect. The
San Clemente Island fox is an
indigenous
Indigenous may refer to:
*Indigenous peoples
*Indigenous (ecology), presence in a region as the result of only natural processes, with no human intervention
*Indigenous (band), an American blues-rock band
*Indigenous (horse), a Hong Kong racehorse ...
species.
Feral
A feral () animal or plant is one that lives in the wild but is descended from domesticated individuals. As with an introduced species, the introduction of feral animals or plants to non-native regions may disrupt ecosystems and has, in some ...
goats roamed the island for centuries, reaching a population of 11,000 in 1972, when their effect on indigenous species was realized. By 1980 the population had been reduced to 4,000. A plan for shooting remaining goats was blocked in court by the
Fund for Animals
Cleveland Amory (September 2, 1917 – October 14, 1998) was an American author, reporter, television critic, commentator and animal rights activist. He originally was known for writing a series of popular books poking fun at the pretensions an ...
, so the goats were removed with nets and helicopters. The
San Clemente Island goat is a recognized breed of domestic goat.
The coves around the island are visited by snorkelers attracted by the abundant sea life, including
sea lion
Sea lions are pinnipeds characterized by external ear flaps, long foreflippers, the ability to walk on all fours, short and thick hair, and a big chest and belly. Together with the fur seals, they make up the family Otariidae, eared seals. ...
s,
spiny lobsters,
hydrocoral
Anthoathecata, or the athecate hydroids, are an order of hydrozoans belonging to the phylum Cnidaria. A profusion of alternate scientific names exists for this long-known, heavily discussed, and spectacular group. It has also been called Gymnobla ...
and
kelp forest
Kelp forests are underwater areas with a high density of kelp, which covers a large part of the world's coastlines. Smaller areas of anchored kelp are called kelp beds. They are recognized as one of the most productive and dynamic ecosystems on Ea ...
s. The island is also home to the endangered San Clemente Island
sage sparrow. After decades with no breeding by raptors, because of DDT contamination and Naval activity, there is now at least one breeding pair of bald eagles and more than one pair of peregrine falcons.
Island flora includes 300 native taxa and approximately 135 non-native taxa with distribution of at least 47 of the island’s native taxa being restricted to two or more of the California Islands, 15 plant taxa being only found on San Clemente Island, and one insular endemic of the island thought to be extinct. The flora of the island includes some plant species found nowhere else in the world. These
endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...
species include the wildflowers
San Clemente Island brodiaea,
San Clemente Island triteleia,
San Clemente Island woodland star, and
San Clemente Island Indian paintbrush, and the
shrub
A shrub (often also called a bush) is a small-to-medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees ...
s
San Clemente Island bushmallow
''Malacothamnus clementinus'' is a rare species of flowering plant in the mallow family known by the common name San Clemente Island bushmallow. It is endemic to San Clemente Island, one of the Channel Islands of California, where it is known f ...
and
Blair's wirelettuce. A unique subspecies of
toyon
''Heteromeles arbutifolia'' (; more commonly by Californian botanists), commonly known as toyon, is a common perennial shrub native to extreme southwest Oregon, California, and the Baja California Peninsula. It is the sole species in the genus ...
, ssp. ''macrocarpa'', also grows here, as do two rare subspecies of the
royal larkspur.
Earthworms
An earthworm is a terrestrial invertebrate that belongs to the phylum Annelida. They exhibit a tube-within-a-tube body plan; they are externally segmented with corresponding internal segmentation; and they usually have setae on all segments. Th ...
appear to have been introduced in 2008 in soil from the mainland used in a road construction project. In this earthworm-free region, the worms alter the soil and
microbial communities Microbial population biology is the application of the principles of population biology to microorganisms.
Distinguishing from other biological disciplines
Microbial population biology, in practice, is the application of population ecology and popu ...
which allows non-native plants to alter the island’s unique ecosystem and threaten
biodiversity
Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') l ...
that exists there.
History
![PSM V48 D732 Musical instruments found on san clemente 1895](https://upload.wikimedia.org/wikipedia/commons/6/6a/PSM_V48_D732_Musical_instruments_found_on_san_clemente_1895.jpg)
Archaeologists have found traces of human occupation on San Clemente Island dating back 10,000 years.
Later inhabitants left trade materials from the northern islands and from the mainland, including
Coso obsidian
Obsidian () is a naturally occurring volcanic glass formed when lava extrusive rock, extruded from a volcano cools rapidly with minimal crystal growth. It is an igneous rock.
Obsidian is produced from felsic lava, rich in the lighter elements s ...
from the California desert. It has not been established what tribe the recent inhabitants belonged to,
although the
Tongva
The Tongva ( ) are an Indigenous people of California from the Los Angeles Basin and the Southern Channel Islands, an area covering approximately . Some descendants of the people prefer Kizh as an endonym that, they argue, is more historically ...
, who are well attested from
Santa Catalina Island, are the most likely candidates. The
Chumash Chumash may refer to:
*Chumash (Judaism), a Hebrew word for the Pentateuch, used in Judaism
*Chumash people, a Native American people of southern California
*Chumashan languages, indigenous languages of California
See also
*Chumash traditional n ...
, who occupied the northern Channel Islands, may have influenced the inhabitants. Evidence of battles: 'the skeletons of dozens of men piled, one upon another' were also noted on San Clemente and
San Nicolas.
The first European to sight the island was
Juan Rodríguez Cabrillo
Juan Rodríguez Cabrillo ( pt, João Rodrigues Cabrilho; c. 1499 – January 3, 1543) was an Iberian maritime explorer best known for investigations of the West Coast of North America, undertaken on behalf of the Spanish Empire. He was the firs ...
in 1542, who named it ''Victoria''.
It was renamed by Spanish explorer
Sebastián Vizcaíno
Sebastián Vizcaíno (1548–1624) was a Spanish soldier, entrepreneur, explorer, and diplomat whose varied roles took him to New Spain, the Baja California peninsula, the California coast and Asia.
Early career
Vizcaíno was born in 154 ...
, who spotted it on November 23, 1602,
Saint Clement's
feast day
The calendar of saints is the traditional Christian method of organizing a liturgical year by associating each day with one or more saints and referring to the day as the feast day or feast of said saint. The word "feast" in this context d ...
. It was used by ranchers, fishermen, and smugglers during the 19th century and into the 20th century.
In 1835, the
whaleship
A whaler or whaling ship is a specialized vessel, designed or adapted for whaling: the catching or processing of whales.
Terminology
The term ''whaler'' is mostly historic. A handful of nations continue with industrial whaling, and one, Japa ...
''Elbe'' of
Poughkeepsie, New York
Poughkeepsie ( ), officially the City of Poughkeepsie, separate from the Town of Poughkeepsie around it) is a city in the U.S. state of New York. It is the county seat of Dutchess County, with a 2020 census population of 31,577. Poughkeepsi ...
, under Captain Josiah B. Whippey (or Whipple), hunted
sperm whale
The sperm whale or cachalot (''Physeter macrocephalus'') is the largest of the toothed whales and the largest toothed predator. It is the only living member of the genus ''Physeter'' and one of three extant species in the sperm whale famil ...
s as far north as "St. Clements Island" (San Clemente Island). The American steamship ''Lansing'', as well as the
steam-schooner ''California'', both anchored in Pyramid Cove, on the south side of San Clemente Island, to process
blue
Blue is one of the three primary colours in the RYB colour model (traditional colour theory), as well as in the RGB (additive) colour model. It lies between violet and cyan on the spectrum of visible light. The eye perceives blue when obs ...
,
fin
A fin is a thin component or appendage attached to a larger body or structure. Fins typically function as foils that produce lift or thrust, or provide the ability to steer or stabilize motion while traveling in water, air, or other fluids. Fin ...
and
humpback whale
The humpback whale (''Megaptera novaeangliae'') is a species of baleen whale. It is a rorqual (a member of the family Balaenopteridae) and is the only species in the genus ''Megaptera''. Adults range in length from and weigh up to . The hump ...
s caught by their "killer boats" (steam-driven whale catchers)—the former between 1926 and 1930, and the latter between 1933 and 1937. In 1935, the Norwegian factory ship ''Esperanza'' caught blue whales as far north as San Clemente Island.
Navy base
The US Navy acquired the island in 1934. It is the Navy's only remaining ship-to-shore live firing range, and is the center of the integrated air/land/sea San Clemente Island Range Complex covering 2,620
nm2 (8,990 km
2).
During
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
, the island was used as a training ground for amphibious landing craft. These small to mid-sized vessels were crucial to the island hopping that was required to attack the islands occupied by the Japanese.
It is an active
sonar
Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigation, navigate, measure distances (ranging), communicate with or detect o ...
base and has a $21 million simulated city for
commando
Royal Marines from 40 Commando on patrol in the Sangin">40_Commando.html" ;"title="Royal Marines from 40 Commando">Royal Marines from 40 Commando on patrol in the Sangin area of Afghanistan are pictured
A commando is a combatant, or operativ ...
training.
There is a US Navy rocket-test facility on San Clemente. Some
Polaris
Polaris is a star in the northern circumpolar constellation of Ursa Minor. It is designated α Ursae Minoris ( Latinized to ''Alpha Ursae Minoris'') and is commonly called the North Star or Pole Star. With an apparent magnitude that ...
-program test rockets were launched from San Clemente between 1957 and 1960. The
SEALAB III
SEALAB I, II, and III were experimental underwater habitats developed by the United States Navy in the 1960s to prove the viability of saturation diving and humans living in isolation for extended periods of time. The knowledge gained from the ...
project took place off San Clemente in February 1969.
The US Navy uses the island as an auxiliary naval airfield,
Naval Auxiliary Landing Field San Clemente Island
Naval Auxiliary Landing Field (NALF) San Clemente Island , also known as Frederick Sherman Field, is a military airport located on San Clemente Island, in Los Angeles County, California, United States. It has been owned by the United States Navy ...
. The main runway 24/06 is used for carrier training by the Navy. Other branches also use this airfield, including the
United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, mult ...
.
As of 2014, San Clemente is home to an auxiliary Air Force base responsible for locating Air Force fighter pilots near the California coast.
The island is home to
United States Navy SEALs
The United States Navy Sea, Air, and Land (SEAL) Teams, commonly known as Navy SEALs, are the U.S. Navy's primary special operations force and a component of the Naval Special Warfare Command. Among the SEALs' main functions are conducting sma ...
training facilities.
Seven
marines
Marines, or naval infantry, are typically a military force trained to operate in littoral zones in support of naval operations. Historically, tasks undertaken by marines have included helping maintain discipline and order aboard the ship (refle ...
and one Navy sailor were presumed to have died when their
amphibious assault vehicle
The Assault Amphibious Vehicle (AAV)—official designation AAVP-7A1 (formerly known as Landing Vehicle, Tracked, Personnel-7 abbr. LVTP-7)—is a fully tracked amphibious vehicle, amphibious landing vehicle manufactured by BAE Systems Land & Ar ...
(AAV) sank during a training exercise off the island's northwest coast on July 30, 2020. One of eight marines died after being rescued from the vehicle. Names of all nine people killed were identified on August 3. Fifteen Marines and a sailor were on the AAV as it returned to
USS Somerset.
The USMC released a statement on 3 August 2020, saying the AAV had been found. The landing craft sank in nearly 400 feet of water.
On 27 August 2020, two soldiers were killed and three were injured when their
Black Hawk helicopter crashed on San Clemente Island.
Government and infrastructure
The island is owned and operated by the
United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
,
and is a part of
Los Angeles County
Los Angeles County, officially the County of Los Angeles, and sometimes abbreviated as L.A. County, is the most populous county in the United States and in the U.S. state of California, with 9,861,224 residents estimated as of 2022. It is the ...
. It is administered by
Naval Base Coronado
Naval Base Coronado (NBC) is a consolidated Navy installation encompassing eight military facilities stretching from San Clemente Island, located seventy miles west of San Diego, California, in Los Angeles County, California, to the Mountain Warfa ...
. The
Los Angeles County Sheriff's Department
The Los Angeles County Sheriff's Department (LASD), officially the County of Los Angeles Sheriff's Department, is a law enforcement agency serving Los Angeles County, California. LASD is the largest sheriff's department in the United States a ...
(LASD) operates the Avalon Station in
Avalon
Avalon (; la, Insula Avallonis; cy, Ynys Afallon, Ynys Afallach; kw, Enys Avalow; literally meaning "the isle of fruit r appletrees"; also written ''Avallon'' or ''Avilion'' among various other spellings) is a mythical island featured in the ...
,
Santa Catalina Island, serving San Clemente Island.
Gallery
File:San Clemente Island Sunrise.jpg, Sunrise at Pyramid Point, San Clemente Island
File:Bluebanded Gobies.jpg, Bluebanded gobies, San Clemente Island
File:California Moray Eel, San Clemente Island, Channel Islands, California.jpg, California moray eel, San Clemente Island
File:Kelp forest and sardines, San Clemente Island, Channel Islands, California.jpg, Kelp forest and sardines
File:2780_aquaimages.jpg, Giant black sea bass, San Clemente Island
File:Giant Black Sea Bass, San Clemente Island, Channel Islands, California.jpg, Giant black sea bass, San Clemente Island
File:Sea Fan.jpg, Sea fan, San Clemente Island
File:Hermissenda Nudibranch, San Clemente Island, Channel Islands, California.jpg, Hermissenda nudibranch, San Clemente Island
File:Bat Ray in kelp forest, San Clemente Island, Channel Islands, California.jpg, Bat ray in kelp forest, San Clemente Island
File:Spanish Shawl nudibranch, Channel Islands, California.jpg, Spanish shawl nudibranch
File:Swell Shark, San Clemente Island, California.jpg, Swellshark, San Clemente Island
File:Swell Shark closeup, San Clemente Island, California.jpg, Swellshark closeup
References
External links
San Clemente IslandA very long thesis about the historical geography of San Clemente Island that was funded by the U.S Navy
{{Authority control
Islands of the Channel Islands of California
Islands of Los Angeles County, California
Islands of Southern California
Islands of California