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The U.S. Navy Marine Mammal Program (NMMP) is a program administered by the
U.S. Navy The United States Navy (USN) is the maritime service branch of the United States Department of Defense. It is the world's most powerful navy with the largest displacement, at 4.5 million tons in 2021. It has the world's largest aircraft ...
which studies the
military A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. Militaries are typically authorized and maintained by a sovereign state, with their members identifiable by a d ...
use of
marine mammal Marine mammals are mammals that rely on marine ecosystems for their existence. They include animals such as cetaceans, pinnipeds, sirenians, sea otters and polar bears. They are an informal group, unified only by their reliance on marine enviro ...
s - principally
bottlenose dolphin The bottlenose dolphin is a toothed whale in the genus ''Tursiops''. They are common, cosmopolitan members of the family Delphinidae, the family of oceanic dolphins. Molecular studies show the genus contains three species: the common bot ...
s and
California sea lion The California sea lion (''Zalophus californianus'') is a coastal eared seal native to western North America. It is one of six species of sea lions. Its natural habitat ranges from southeast Alaska to central Mexico, including the Gulf of Califo ...
s - and trains animals to perform tasks such as ship and harbor protection, mine detection and clearance, and equipment recovery. The program is based in
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 ...
, California, where animals are housed and trained on an ongoing basis. NMMP animal teams have been deployed for use in
combat Combat (French language, French for ''fight'') is a purposeful violent Conflict (process), conflict between multiple combatants with the intent to harm the opposition. Combat may be armed (using weapons) or unarmed (Hand-to-hand combat, not usin ...
zones, such as during the
Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...
and the
Iraq War The Iraq War (), also referred to as the Second Gulf War, was a prolonged conflict in Iraq lasting from 2003 to 2011. It began with 2003 invasion of Iraq, the invasion by a Multi-National Force – Iraq, United States-led coalition, which ...
. The program has been dogged by controversy over the treatment of the animals and speculation as to the nature of its mission and training. This has been due at least in part to the secrecy of the program, which was de-classified in the early 1990s. Since the program's inception, there have been ongoing
animal welfare Animal welfare is the quality of life and overall well-being of animals. Formal standards of animal welfare vary between contexts, but are debated mostly by animal welfare groups, legislators, and academics. Animal welfare science uses measures ...
concerns, with many opposing the use of marine mammals in military applications, even in essentially
non-combatant Non-combatant is a term of art in the law of war and international humanitarian law to refer to civilians who are not taking a direct part in hostilities. People such as combat medics and military chaplains, who are members of the belligerent arm ...
roles such as mine detection. The Navy cites external oversight, including ongoing monitoring, in defense of its animal care standards.


History

The origins of the program date back to 1960, when a
Pacific white-sided dolphin The Pacific white-sided dolphin (''Lagenorhynchus obliquidens''), also known as the hookfin porpoise, is an active dolphin found in the cool or temperate waters of the North Pacific Ocean. Taxonomy The Pacific white-sided dolphin was named by Sm ...
was acquired for
hydrodynamic In physics, physical chemistry and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids – liquids and gases. It has several subdisciplines, including (the study of air and other gases in moti ...
studies seeking to improve
torpedo A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such ...
performance.A Brief History of the Navy's Marine Mammal Program
from the foreword to the Annotated Bibliography of Publications from the NMMP
The aim was to determine whether dolphins had a sophisticated drag-reduction system, but the technology of the day failed to demonstrate that dolphins have any unusual capabilities in this respect. This research has now resumed with the benefit of modern-day technology; among the possible drag-reducing mechanisms being studied for human use are skin compliance,
biopolymer Biopolymers are natural polymers produced by the cells of living organisms. Like other polymers, biopolymers consist of monomeric units that are covalently bonded in chains to form larger molecules. There are three main classes of biopolymers, ...
s, and boundary-layer heating. In 1962, the animals' intelligence, exceptional diving ability, and trainability led to the foundation of a new research program at Point Mugu, California, where a research facility was built on a sand spit between
Mugu Lagoon Mugu Lagoon (; Chumash: ''Muwu'', meaning "Beach") is a salt marsh located within the Naval Base Ventura County at the foot of the Santa Monica Mountains in Ventura County, California. The lagoon extends for 4.3 miles parallel to a narrow barrier ...
and the ocean. The intention was to study the dolphins' senses and capabilities, such as their natural
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 navigate, measure distances ( ranging), communicate with or detect objects o ...
and deep-diving physiology, and to determine how dolphins and
sea lions 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. ...
might be used to perform useful tasks, such as searching for and marking objects in the water. A major accomplishment was the discovery that trained dolphins and sea lions could be reliably worked untethered in the open sea. In 1965, a Navy dolphin named Tuffy participated in the
SEALAB II SEALAB I, II, and III were experimental underwater habitats developed and deployed by the United States Navy during the 1960s to prove the viability of saturation diving and humans living in isolation for extended periods of time. The knowledge ...
project off
La Jolla, California La Jolla ( , ) is a hilly, seaside neighborhood in San Diego, California, occupying of curving coastline along the Pacific Ocean. The population reported in the 2010 census was 46,781. The climate is mild, with an average daily temperature o ...
, carrying tools and messages between the surface and the habitat 200 feet (60 m) below. Tuffy was also trained to locate and guide lost divers to safety. In 1967 the NMMP was classified and has since evolved into a major black budget program. The Point Mugu facility and its personnel were relocated to
Point Loma Point Loma ( Spanish: ''Punta de la Loma'', meaning "Hill Point"; Kumeyaay: ''Amat Kunyily'', meaning "Black Earth") is a seaside community in San Diego, California, United States. Geographically it is a hilly peninsula that is bordered on the ...
in San Diego, and placed under the control of the Space and Naval Warfare Systems Center San Diego. Additionally, a laboratory was established in
Hawaii Hawaii ( ; ) is an island U.S. state, state of the United States, in the Pacific Ocean about southwest of the U.S. mainland. One of the two Non-contiguous United States, non-contiguous U.S. states (along with Alaska), it is the only sta ...
at the Marine Corps Air Station on Kāneohe Bay at the northern end of Mokapu Peninsula. However, in 1993, as the result of the
Base Realignment and Closure Base Realignment and Closure (BRAC) was a process by a Federal government of the United States, United States federal government commission to increase the efficiency of the United States Department of Defense by coordinating the realignment and ...
process, the Hawaii lab was closed and the majority of the animals were moved to San Diego; some animals remained, as part of a program of joint research between the Navy and the
University of Hawaiʻi The University of Hawaiʻi System is a public college and university system in Hawaii. The system confers associate, bachelor's, master's, and doctoral degrees through three universities, seven community colleges, an employment training center, ...
.


The program

The Navy Marine Mammal Program is based in
San Diego, California 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 ...
, as part of SSC San Diego. The animals are trained in
San Diego Bay San Diego Bay is a natural harbor and deepwater port in San Diego County, California, near the Mexico–United States border. The bay, which is long and wide, is the third largest of the three large, protected natural bays on California's of ...
; dolphin handlers can frequently be seen on the bay, where specialized small boats are used to transport dolphins between their pens and the training areas. Other locations are sometimes used for specific research, such as
San Clemente Island San Clemente Island (Tongva: ''Kinkipar''; Spanish: ''Isla de San Clemente'') is the southernmost of the Channel Islands of California. It is owned and operated by the United States Navy, and is a part of Los Angeles County. It is administer ...
in 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. They define the Santa Barbara Channel between the islands and the California mainland. The ...
, and torpedo test ranges in
Seattle Seattle ( ) is the most populous city in the U.S. state of Washington and in the Pacific Northwest region of North America. With a population of 780,995 in 2024, it is the 18th-most populous city in the United States. The city is the cou ...
and
Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...
. The program's stated animal activities include protecting ports and Navy assets from swimmer attack, locating and assisting in the recovery of expensive exercise and training targets, and locating potentially dangerous sea mines. There are five marine mammal teams, each trained for a specific type of mission. Each human-animal team is known in military jargon by a "mark" number (MK for short); the five teams are called "MK 4", "MK 5", "MK 6", "MK 7", and "MK 8". The MK 4, 7 and 8 teams use dolphins; MK 5 uses sea lions, and MK 6 uses both sea lions and dolphins. These teams can be deployed at 72 hours' notice by ship, aircraft, helicopter, and land vehicle to regional conflicts or staging areas around the world.


Mine hunting

Three of the marine mammal teams are trained to detect enemy
sea mines A naval mine is a self-contained explosive weapon placed in water to damage or destroy surface ships or submarines. Similar to anti-personnel mine, anti-personnel and other land mines, and unlike purpose launched naval depth charges, they are ...
, which constitute a major hazard to U.S. Navy ships. MK 4 uses dolphins to detect and mark the location of tethered sea mines floating off the bottom, while MK 7 dolphins are trained to detect and mark the location of mines on the sea floor or buried in sediment. The MK 8 team is trained to swiftly identify safe corridors for the initial landing of troops ashore. In operations, a dolphin awaits a cue from its handler before starting to search a specific area using its natural echolocation. The dolphin reports back to its handler, giving particular responses to communicate whether a target object is detected. If a mine-like target is detected, the handler sends the dolphin to mark the location of the object by releasing a buoy, so it can be avoided by Navy vessels or neutralized by Navy divers. Mine-clearance dolphins were deployed to the
Persian Gulf The Persian Gulf, sometimes called the Arabian Gulf, is a Mediterranean seas, mediterranean sea in West Asia. The body of water is an extension of the Arabian Sea and the larger Indian Ocean located between Iran and the Arabian Peninsula.Un ...
during the
Iraq War The Iraq War (), also referred to as the Second Gulf War, was a prolonged conflict in Iraq lasting from 2003 to 2011. It began with 2003 invasion of Iraq, the invasion by a Multi-National Force – Iraq, United States-led coalition, which ...
in 2003. The Navy said these dolphins were effective in helping to detect more than 100 antiship mines and underwater
booby trap A booby trap is a device or setup that is intended to kill, harm or surprise a human or an animal. It is triggered by the presence or actions of the victim and sometimes has some form of bait designed to lure the victim towards it. The trap may b ...
s from the port of
Umm Qasr Umm Qasr (, also transliterated as ''Um-qasir'', ''Um-qasser, Um Qasr. Kurdish: ئومقەسڕ, Ûmqêsir'') is a port city in southern Iraq. It stands on the canalised Khawr az-Zubayr, part of the Khawr Abd Allah estuary which leads to the P ...
.


Force protection

MK 6 uses dolphins and sea lions as sentries to protect harbor installations and ships against unauthorized human swimmers. MK 6 was first operationally deployed with dolphins during the
Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...
from 1965 to 1975 and in
Bahrain Bahrain, officially the Kingdom of Bahrain, is an island country in West Asia. Situated on the Persian Gulf, it comprises a small archipelago of 50 natural islands and an additional 33 artificial islands, centered on Bahrain Island, which mak ...
from 1986 to 1988. When an enemy diver is detected by a dolphin, the dolphin approaches from behind and bumps a device into the back of the enemy's air tank. This device is attached to a buoy which then explodes, alerting the Navy personnel of the intruder. Sea lions carry a similar device in their mouth, but instead attach it by hand-cuffing one of the enemy's limbs. The animals depend on their superior underwater senses and swimming ability to defend against counterattacks.


Object recovery

MK 5 is dedicated to the recovery of test equipment that is fired from ships or dropped from planes into the ocean; the team uses California sea lions to locate and attach recovery hardware to underwater objects such as practice mines. In this role they can out-perform human divers, who are restricted to short working times and limited repeat diving. This team first demonstrated its capabilities when it recovered an
ASROC The RUR-5 ASROC (for "Anti-Submarine Rocket") is an all-weather, all sea-conditions anti-submarine missile system. Developed by the United States Navy in the 1950s, it was deployed in the 1960s, updated in the 1990s, and eventually installed ...
(anti submarine rocket) from a depth of 180 feet (50 m) in November 1970. The team has trained in the recovery of dummy victims in a simulated airplane crash.


Attack missions

The Navy says that it has never trained its marine mammals for attack missions against people or ships. The Navy stated that since dolphins cannot discern the difference between enemy and friendly vessels, or divers and swimmers, this would be a haphazard means of warfare; instead, the animals are trained to detect all mines and swimmers in an area of concern, and to report back to their handlers, who then decide upon an appropriate response.


Animals

The Navy identifies the following animal species as having been used or studied by the program at various times: Bottlenose dolphins and California sea lions are the main animals used, and are kept at the base in San Diego. Dolphins have powerful biological sonar, unmatched by artificial sonar technology in detecting objects in the water column and on the sea floor. Sea lions lack this, but have very sensitive underwater directional hearing and exceptional vision in low-light conditions. Both of these species are trainable and capable of repetitive deep diving. As of the late 1990s, about 140 marine mammals were part of the program.


Animal welfare

There has been controversy related to alleged mistreatment of animals in the program, and controversy continues over the use of marine mammals for military purposes. The Navy's policy requires that only
positive reinforcement Positive is a property of positivity and may refer to: Mathematics and science * Positive formula, a logical formula not containing negation * Positive number, a number that is greater than 0 * Plus sign, the sign "+" used to indicate a posit ...
techniques be used in the training of their animals, and that they be cared for in accordance with accepted standards. The NMMP says it complies strictly with United States Department of Defense requirements and federal laws regarding the proper care of the animals, including the
Marine Mammal Protection Act The Marine Mammal Protection Act (MMPA) was the first act of the United States Congress to call specifically for an ecosystem approach to wildlife management. Authority MMPA was signed into law on October 21, 1972, by President Richard Nixon ...
and the Animal Welfare Act. The program is listed as an accredited institution by the Association for the Accreditation of Animal Laboratory Animal Care (AAALAC), whose voluntary accreditation program requires research programs to demonstrate that they meet standards of animal care beyond those required by law. As a standard targeted at laboratory animals, this accreditation requires a specific standard of general animal care, but does not set restrictions on the purposes for which the animals are used. The NMMP is also listed as a member of the Alliance of Marine Mammal Parks and Aquariums. The NMMP protocols for both care and research must be approved by an institutional animal care and use committee (IACUC). The NMMP IACUC includes non-NMMP researchers, veterinarians, and members of the community. The use of marine mammals by the Navy, even in accordance with the Navy's stated policy, continues to meet opposition. Opponents cite the inevitable stresses involved in this type of training, which is contrary to the animals' natural lifestyles, particularly regarding their confinement when not training. There is continuing controversy over the use of anti-foraging devices, such as muzzles, which prevent the dolphins from
foraging Foraging is searching for wild food resources. It affects an animal's fitness because it plays an important role in an animal's ability to survive and reproduce. Foraging theory is a branch of behavioral ecology that studies the foraging behavi ...
for food while working. The Navy states that this is to prevent their ingesting harmful objects, but opponents say that this is done to reinforce the handlers' control over the dolphins, which is based on food rewards. The re-integration and/or extended care of "retired" animals is also a concern. The field use of the animals is also an issue for some critics, partly because of the stresses involved in transportation  — particularly where dolphins are transported on dry carriers  — as well as stresses arising from the sudden transplantation of the animals into an unfamiliar environment. Dolphins native to areas in which NMMP dolphins are introduced can also pose a threat, since they are known to defend their territory from intruders. Other people raise the issue of hazards to the animals in their working environments. The risk of accidental detonation of a mine by an animal is of concern to some; the Navy maintains that the chances of this are minimal, because the animals are trained not to touch the mines, which in any case are specifically designed not to be detonated by marine animals. Another fear is that opposing forces, aware of mine-hunting dolphins in a given area, may shoot dolphins in the water, leading to deaths of both NMMP and native animals. Still more criticism comes from the argument that it is immoral or arrogant to involve animals in the conflicts of human beings.


In the media

The NMMP has received much sensational coverage in the media, in some part because of the unusual nature of the program and the controversial concept of using intelligent marine mammals for military purposes. The NMMP was
classified Classified may refer to: General *Classified information, material that a government body deems to be sensitive *Classified advertising or "classifieds" Music *Classified (rapper) (born 1977), Canadian rapper * The Classified, a 1980s American ro ...
until the early 1990s, which also contributed to speculation about its true nature and even its proper title, with some referring to it as the ''Cetacean Intelligence Mission''. From time to time, stories have surfaced in the media claiming that military dolphins trained for attack missions, or even equipped with weaponry, have escaped and pose a danger to the public, but the Navy has stated that its dolphins have never been trained for any kind of attack mission against ships or people. During
Hurricane Katrina Hurricane Katrina was a powerful, devastating and historic tropical cyclone that caused 1,392 fatalities and damages estimated at $125 billion in late August 2005, particularly in the city of New Orleans and its surrounding area. ...
in 2005, there were media reports that some of the Navy's dolphins, equipped with poison dart guns and trained to attack hostile swimmers in the water, escaped when their containment area in
Lake Pontchartrain Lake Pontchartrain ( ; ) is an estuary located in southeastern Louisiana in the United States. It covers an area of with an average depth of . Some shipping channels are kept deeper through dredging. It is roughly oval in shape, about from w ...
was breached, posing a threat to swimmers. However, the Navy reported that all of its dolphins were accounted for, and that its only dolphin training centre is in San Diego. During the hurricane, some dolphins did escape from the unrelated Marine Life Oceanarium in Gulfport, Mississippi, and were subsequently recaptured.Snopes: Killer Dolphins
nbsp; — article on the Katrina story from th
Urban Legends Reference
page


In fiction

The concept of military dolphins has been explored in fiction, notably in the film ''
The Day of the Dolphin ''The Day of the Dolphin'' is a 1973 American science fiction thriller film directed by Mike Nichols and starring George C. Scott. Based on the 1967 novel '' Un animal doué de raison'' (lit. ''A Sentient Animal''), by French writer Robert Mer ...
'' (Mike Nichols, 1973) loosely based on the novel ''Un animal doué de la raison'' (''A Sentient Animal'', 1967) by Robert Merle.
Vonda McIntyre Vonda Neel McIntyre () was an American science fiction writer and biologist. Early life and education Vonda N. McIntyre was born in Louisville, Kentucky, the daughter of H. Neel and Vonda B. Keith McIntyre, who were born in Poland, Ohio. She ...
published a
short story A short story is a piece of prose fiction. It can typically be read in a single sitting and focuses on a self-contained incident or series of linked incidents, with the intent of evoking a single effect or mood. The short story is one of the old ...
titled "The End's Beginning" with this theme in 1976; it was later collected in the anthology '' Fireflood''. The
William Gibson William Ford Gibson (born March 17, 1948) is an American-Canadian speculative fiction writer and essayist widely credited with pioneering the science fiction subgenre known as cyberpunk. Beginning his writing career in the late 1970s, his ear ...
short story "
Johnny Mnemonic "Johnny Mnemonic" is a Cyberpunk short story by American-Canadian writer William Gibson. It first appeared in '' Omni'' magazine in May 1981, and was subsequently included in ''Burning Chrome'', a 1986 collection of Gibson's short fiction. It tak ...
" and its film adaptation also featured a
cyborg A cyborg (, a portmanteau of ''cybernetics, cybernetic'' and ''organism'') is a being with both Organic matter, organic and biomechatronic body parts. The term was coined in 1960 by Manfred Clynes and Nathan S. Kline.decryption In cryptography, encryption (more specifically, encoding) is the process of transforming information in a way that, ideally, only authorized parties can decode. This process converts the original representation of the information, known as plai ...
, and a
heroin Heroin, also known as diacetylmorphine and diamorphine among other names, is a morphinan opioid substance synthesized from the Opium, dried latex of the Papaver somniferum, opium poppy; it is mainly used as a recreational drug for its eupho ...
addiction. The TV series ''
seaQuest DSV ''SeaQuest DSV'' (stylized as ''seaQuest DSV'' and also promoted as simply ''seaQuest'') is an American science fiction television series created by Rockne S. O'Bannon for NBC. It aired between 1993 and 1996. In its final season, it was re ...
'' featured a trained dolphin, Darwin, as a member of the crew. Dolphins armed with sonar cannons were also portrayed in the popular video games ''
Red Alert 2 ''Command & Conquer: Red Alert 2'' is a real-time strategy video game released for Microsoft Windows on October 25, 2000, as the follow-up to '' Command & Conquer: Red Alert''. ''Red Alert 2'' picks up after the Allied campaign of the first gam ...
'' and ''
Red Alert 3 ''Command & Conquer: Red Alert 3'' is a real-time strategy video game developed by EA Los Angeles and published by Electronic Arts. It was released in October 2008 in the United States and Europe for Microsoft Windows. An Xbox 360 version was r ...
''. The writer
David Brin Glen David Brin (born October 6, 1950) is an American science fiction author. He has won the Hugo Award, Hugo,
's book ''
Startide Rising ''Startide Rising'' is a 1983 science fiction novel by American writer David Brin, the second book of six set in his Uplift Universe (preceded by '' Sundiver'' and followed by '' The Uplift War''). It earned both Hugo and Nebula Awards for Bes ...
'' is about genetically engineered dolphins crewing a spaceship. In the '' Star Trek: The Next Generation'' USS ''Enterprise'' (NCC-1701-D) Blueprints by
Rick Sternbach Richard Michael Sternbach (born July 6, 1951) is an illustrator who is best known for his space illustrations and his work on the ''Star Trek'' television series. Early years Born July 6, 1951, in Bridgeport, Connecticut, in 1969 Sternbach enr ...
there are multiple
cetacea Cetacea (; , ) is an infraorder of aquatic mammals belonging to the order Artiodactyla that includes whales, dolphins and porpoises. Key characteristics are their fully aquatic lifestyle, streamlined body shape, often large size and exclusively c ...
n operations locations on decks 13 & 14.


See also

* Military dolphin *
Military animal Military animals are trained animals that are used in warfare and other combat related activities. As working animals, different military animals serve different functions. Horses, elephants, camels, and other animals have been used for both tra ...
s * Cetacean intelligence * Vaquita#Recovery efforts, US Navy dolphins are being deployed to locate the remaining vaquitas for captive breeding


References


Further reading

* Sam H. Ridgway, Handbook of Marine Mammals (6 volumes)
Academic Press Academic Press (AP) is an academic book publisher founded in 1941. It launched a British division in the 1950s. Academic Press was acquired by Harcourt, Brace & World in 1969. Reed Elsevier said in 2000 it would buy Harcourt, a deal complete ...
ritten by a NMMP veterinarian* Sam H. Ridgway, "Dolphin Doctor: A Pioneering Veterinarian and Scientist Remembers the Extraordinary Dolphin that Inspired His Career". Dolphin Science Press (original publication, Yankee Books © 1987) ritten by a NMMP veterinarian about his work with a dolphin named Tuffy when the facility was at Point Mugu, California


External links


NMMP Home Page
— the program's official web site
Naval Information Warfare Center Pacific (SSC Pacific)
— home page of the Navy research unit which includes the NMMP

nbsp; — info on military uses of dolphins {{US Navy navbox Cetology Marine mammals Equipment of the United States Navy Organizations based in San Diego Military animals Military projects of the United States Human–animal communication