Vaquita

The vaquita is a shy member of the porpoise family and the most endangered of the world's marine mammals. It is a species of porpoise endemic to the northern end of the Gulf of California in Baja California, Mexico, and it has the smallest range of any whale, dolphin or porpoise, living only in that northern gulf, an area rich in fish and shrimp. Most vaquitas live east of San Felipe within a 1,519-square-mile area that is less than one-fourth the size of metropolitan Los Angeles. The animals occupy shallow, turbid waters of less than 150 m depth, within the smallest range of any cetacean species.

Reaching a maximum body length of 150 cm in females and 140 cm in males, the vaquita is the smallest of all living cetaceans. It is about 5 feet long with a rounded head and no beak, black patches around its eyes and lips, and spade-shaped teeth. Vaquitas forage as generalists on demersal fish, crustaceans and squids, with benthic fish such as grunts and croakers dominating the diet; they feed on small fish, crustaceans such as shrimp, and cephalopods such as squid and octopuses. They are generally seen alone or in pairs, often with a calf, but have been observed in small groups of up to 10 individuals.

The vaquita was defined as a species by two zoologists, Kenneth S. Norris and William N. McFarland, in 1958 after studying the morphology of skull specimens. The species is on the brink of extinction and is listed as Critically Endangered by the IUCN Red List, with the steep decline driven primarily by gillnet bycatch; it has been listed as critically endangered by the IUCN Red List of Threatened Species since 1996. Because totoaba and vaquita are similar in size, gillnets illegally set for totoaba are the deadliest for vaquitas.

The first comprehensive survey across the whole range took place in 1997 and estimated a population of 567 individuals; by 2007 abundance was estimated to have dropped to 150. From 1997 to 2008 vaquitas declined from around 600 to about 200 individuals as a result of legal fishing, largely for shrimp exported to the United States. Abundance was estimated at fewer than 19 individuals in 2018, down from the 567 counted in the 1997 range-wide survey. A 2024 survey observed a minimum of 6 to 8 individuals, the lowest ever counted, though the small survey area may explain the figure rather than a real decline. Monitoring in 2025 identified 7 to 10 unique individuals and the birth of new calves.

Mexico launched a program in 2008 called PACE-VAQUITA to enforce the gillnet ban in the Biosphere Reserve, swap gear for vaquita-safe alternatives, and support fishers who surrendered permits. Poaching continued because totoaba swim bladders can sell for $20,000 to more than $80,000, earning them the name cocaine of the sea. In 2019 the UNESCO World Heritage Site where the last vaquitas live was classified as a World Heritage Site in Danger. In March 2020 the U.S. National Marine Fisheries Service announced a ban on imported Mexican shrimp and other seafood caught in vaquita habitat. Beginning in July 2022 the Mexican government placed 193 concrete blocks in the Gulf of California no-tolerance zone to snag and destroy illegal gillnets.

The vaquita is a species of porpoise confined to the northern end of the Gulf of California in Baja California, Mexico, a shy member of the porpoise family and the most endangered of the world's marine mammals. It is the smallest of all living cetaceans, reaching a maximum body length of 150 cm in females and 140 cm in males. Externally it is about 5 feet long, with a rounded head and no beak, black patches around the eyes and lips, and spade-shaped teeth.

The species was defined by two zoologists, Kenneth S. Norris and William N. McFarland, in 1958 after studying the morphology of skull specimens. Its range is the smallest of any whale, dolphin or porpoise, and most individuals live east of San Felipe within a 1,519-square-mile area that is less than one-fourth the size of metropolitan Los Angeles. Vaquitas keep to shallow, turbid waters of less than 150 m depth, within the smallest range of any cetacean species.

Vaquitas forage as generalists on demersal fish, crustaceans and squids, with benthic fish such as grunts and croakers dominating the diet. They also take small fish, crustaceans such as shrimp, and cephalopods such as squid and octopuses. They are generally seen alone or in pairs, often with a calf, but have been observed in small groups of up to 10 individuals.

The steep decline is driven primarily by gillnet bycatch, and because totoaba and vaquita are similar in size, gillnets illegally set for totoaba are the deadliest for vaquitas. From 1997 to 2008 vaquitas declined from around 600 to about 200 individuals as a result of legal fishing, largely for shrimp exported to the United States. The first comprehensive survey across the whole range took place in 1997 and estimated a population of 567 individuals; by 2007 abundance was estimated to have dropped to 150. Abundance was estimated at fewer than 19 individuals in 2018, down from the 567 counted in the 1997 range-wide survey. A 2024 survey observed a minimum of 6 to 8 individuals, the lowest ever counted, though the small survey area may explain the figure rather than a real decline. Monitoring in 2025 identified 7 to 10 unique individuals and the birth of new calves.

The vaquita has been listed as critically endangered by the IUCN Red List of Threatened Species since 1996. In 2019 the UNESCO World Heritage Site where the last vaquitas live was classified as a World Heritage Site in Danger. Mexico launched a program in 2008 called PACE-VAQUITA to enforce the gillnet ban in the Biosphere Reserve, swap gear for vaquita-safe alternatives, and support fishers who surrendered permits. Poaching continued because totoaba swim bladders can sell for $20,000 to more than $80,000, earning them the name cocaine of the sea. In March 2020 the U.S. National Marine Fisheries Service announced a ban on imported Mexican shrimp and other seafood caught in vaquita habitat. Beginning in July 2022 the Mexican government placed 193 concrete blocks in the Gulf of California no-tolerance zone to snag and destroy illegal gillnets.

The first survey to span the animal's entire range was carried out in 1997 and returned an estimate of 567 individuals^{2Vaquita · Wikipedia ↗}. A repeat survey in 2008 put total abundance at 245 animals, 57 percent below the 1997 figure, equivalent to an average loss of 7.6 percent per year^{3Vaquita Conservation and Abundance · NOAA Fisheries ↗}. Between those two points the species is reckoned to have fallen from roughly 600 to about 200 individuals, a contraction attributed to legal fishing, chiefly for shrimp destined for the United States market^{1Vaquita · NOAA Fisheries ↗}. By 2007 abundance was estimated to have dropped to 150^{2Vaquita · Wikipedia ↗}.

Monitoring from 2011 onward relied on passive acoustic detectors deployed each summer through 2018, supplemented by visual counts of at least seven animals in 2017 and six in 2018^{4Decline towards extinction of Mexico's vaquita porpoise (Phocoena sinus) · Royal Society Open Science (Jaramillo-Legorreta et al. 2019) ↗}. The acoustic record showed the population falling by 80 percent between 2011 and 2015, before the emergency gillnet ban took effect in May 2015^{3Vaquita Conservation and Abundance · NOAA Fisheries ↗}. The ban did not arrest the slide: the estimated rate of decline was 48 percent in 2017 and 47 percent in 2018^{4Decline towards extinction of Mexico's vaquita porpoise (Phocoena sinus) · Royal Society Open Science (Jaramillo-Legorreta et al. 2019) ↗}.

Combining acoustic data with visual observations for the years 2011 to 2018 yields an average annual decline of 33 percent and a cumulative population decline of 98.6 percent^{5Vaquita · U.S. Marine Mammal Commission ↗}. The same analysis places the probability that the decline exceeds 33 percent a year at greater than 99 percent^{4Decline towards extinction of Mexico's vaquita porpoise (Phocoena sinus) · Royal Society Open Science (Jaramillo-Legorreta et al. 2019) ↗}. A separate acoustic estimate puts the annual decline across that window at about 45 percent, with a credible interval of 38 to 53 percent^{6Phocoena sinus, Vaquita. The IUCN Red List of Threatened Species 2022 · IUCN ↗}.

For 2018 the population was estimated at fewer than 19 animals, with a posterior mean of 9^{4Decline towards extinction of Mexico's vaquita porpoise (Phocoena sinus) · Royal Society Open Science (Jaramillo-Legorreta et al. 2019) ↗}. The trajectory is set against a very low ceiling on recovery: given the species' demographic parameters, the maximum annual population growth rate was thought to be about 4 percent, and recent evidence of annual calving could raise it to roughly 6 percent^{4Decline towards extinction of Mexico's vaquita porpoise (Phocoena sinus) · Royal Society Open Science (Jaramillo-Legorreta et al. 2019) ↗}. The IUCN Red List classes the vaquita as Critically Endangered, with gillnet bycatch identified as the principal driver of the steep decline^{2Vaquita · Wikipedia ↗}.

A 2024 survey recorded a minimum of 6 to 8 individuals, the lowest count ever obtained; the small area covered may account for the figure rather than a genuine further decline^{2Vaquita · Wikipedia ↗}.

The vaquita is a porpoise found nowhere but the northern end of the Gulf of California in Baja California, Mexico. It is the smallest of all living cetaceans, with females reaching a maximum body length of 150 cm and males 140 cm. A shy member of the porpoise family, it is regarded as the most endangered of the world's marine mammals. Its range is the smallest of any whale, dolphin or porpoise, confined to a part of the gulf rich in fish and shrimp. Most individuals live east of San Felipe within a 1,519-square-mile area less than one-fourth the size of metropolitan Los Angeles. The animals keep to shallow, turbid waters of less than 150 m depth, within the smallest range of any cetacean species. They are generally seen alone or in pairs, often with a calf, though small groups of up to 10 individuals have been observed. Externally they are about 5 feet long, with a rounded head and no beak, black patches around the eyes and lips, and spade-shaped teeth.

Vaquitas forage as generalists on demersal fish, crustaceans and squids, with benthic fish such as grunts and croakers dominating the diet. They also feed on small fish, crustaceans such as shrimp, and cephalopods such as squid and octopuses. The species was defined by two zoologists, Kenneth S. Norris and William N. McFarland, in 1958 after studying the morphology of skull specimens.

The central mechanism of decline is entanglement in gillnets, and the deadliest of these are set illegally for totoaba, a fish similar in size to the vaquita. Poaching has persisted because totoaba swim bladders can sell for $20,000 to more than $80,000, a price that has earned them the name cocaine of the sea. Legal fishing also took its toll: from 1997 to 2008 vaquitas declined from around 600 to about 200 individuals as a result of legal fishing, largely for shrimp exported to the United States. The first comprehensive survey across the whole range took place in 1997 and estimated a population of 567 individuals; by 2007 abundance was estimated to have dropped to 150. Abundance was estimated at fewer than 19 individuals in 2018, down from the 567 counted in the 1997 range-wide survey. A 2024 survey observed a minimum of 6 to 8 individuals, the lowest ever counted, though the small survey area may explain the figure rather than a real decline. Monitoring in 2025 identified 7 to 10 unique individuals and the birth of new calves.

The species has been listed as critically endangered by the IUCN Red List of Threatened Species since 1996. Mexico launched a program in 2008 called PACE-VAQUITA to enforce the gillnet ban in the Biosphere Reserve, swap gear for vaquita-safe alternatives, and support fishers who surrendered permits. In 2019 the UNESCO World Heritage Site where the last vaquitas live was classified as a World Heritage Site in Danger. In March 2020 the U.S. National Marine Fisheries Service announced a ban on imported Mexican shrimp and other seafood caught in vaquita habitat. Beginning in July 2022 the Mexican government placed 193 concrete blocks in the Gulf of California no-tolerance zone to snag and destroy illegal gillnets.

The vaquita is a porpoise found only at the northern end of the Gulf of California in Baja California, Mexico, and it is the smallest of all living cetaceans, with females reaching a maximum body length of 150 cm and males 140 cm. It is a shy member of the porpoise family and the most endangered of the world's marine mammals. The animal has a rounded head without a beak, black patches around the eyes and lips, and spade-shaped teeth, and measures about 5 feet in length.

The species was defined by two zoologists, Kenneth S. Norris and William N. McFarland, in 1958 after they studied the morphology of skull specimens. Vaquitas occupy shallow, turbid waters of less than 150 m depth, within the smallest range of any cetacean species; they have the smallest range of any whale, dolphin or porpoise, living only in the northern Gulf of California, an area rich in fish and shrimp. Most individuals live east of San Felipe within a 1,519-square-mile area that is less than one-fourth the size of metropolitan Los Angeles.

Vaquitas forage as generalists on demersal fish, crustaceans and squids, with benthic fish such as grunts and croakers dominating the diet; they feed on small fish, crustaceans such as shrimp, and cephalopods such as squid and octopuses. They are generally seen alone or in pairs, often with a calf, but have been observed in small groups of up to 10 individuals.

The species is on the brink of extinction and is listed as Critically Endangered by the IUCN Red List, with the steep decline driven primarily by gillnet bycatch; it has held that listing since 1996. Because totoaba and vaquita are similar in size, gillnets illegally set for totoaba are the deadliest for vaquitas. From 1997 to 2008 vaquitas declined from around 600 to about 200 individuals as a result of legal fishing, largely for shrimp exported to the United States.

The first comprehensive survey across the whole range took place in 1997 and estimated a population of 567 individuals; by 2007 abundance was estimated to have dropped to 150. Abundance was estimated at fewer than 19 individuals in 2018, down from the 567 counted in the 1997 range-wide survey. A 2024 survey observed a minimum of 6 to 8 individuals, the lowest ever counted, though the small survey area may explain the figure rather than a real decline. Monitoring in 2025 identified 7 to 10 unique individuals and the birth of new calves.

Mexico launched a program in 2008 called PACE-VAQUITA to enforce the gillnet ban in the Biosphere Reserve, swap gear for vaquita-safe alternatives, and support fishers who surrendered permits. Poaching continued because totoaba swim bladders can sell for $20,000 to more than $80,000, earning them the name cocaine of the sea. In 2019 the UNESCO World Heritage Site where the last vaquitas live was classified as a World Heritage Site in Danger. In March 2020 the U.S. National Marine Fisheries Service announced a ban on imported Mexican shrimp and other seafood caught in vaquita habitat. Beginning in July 2022 the Mexican government placed 193 concrete blocks in the Gulf of California no-tolerance zone to snag and destroy illegal gillnets.