Taiji dolphin hunting is an annual drive hunt in the town of Taiji, Wakayama Prefecture, on Japan’s Pacific coast, in which fishermen herd wild dolphins and small whales into a cove, kill most of them for meat, and sell a small number alive to marine parks. The season opens on 1 September and normally runs to the end of February. Japan’s Fisheries Agency set Taiji’s quota for the 2025/26 season at 1,814 animals across nine species.
The often-repeated claim that “20,000 dolphins a year” die at Taiji is not accurate, and the real numbers matter if you want to argue about this honestly. Roughly 20,000 was an estimate of Japan’s entire national small-cetacean catch in earlier decades, across every hunting method and prefecture. Both the national and the Taiji figures have fallen a long way since. In fiscal year 2023, Japan’s national dolphin quota was 10,920 animals, of which 1,824 were allocated to Taiji — and the actual catch was 614 nationally, 492 of them at Taiji. The hunt is smaller than the myth. It is still the largest dolphin drive hunt on Earth.
Taiji Dolphin Hunting by the Numbers
- Season: 1 September to the end of February (the 2025/26 season ran 1 September 2025 to 28 February 2026).
- 2025/26 quota: 1,814 small cetaceans across nine species, set by Japan’s Fisheries Agency.
- 2025/26 outcome: about 1,120 animals were driven into the cove; 422 were killed, 84 were taken alive for the captivity trade, and roughly 601 were driven back out to sea. Total take was 506 animals — about 28% of the quota (Ceta-Base season records).
- Species taken in 2025/26: melon-headed whale (128 killed), striped dolphin (182), Risso’s dolphin (68), short-finned pilot whale (42), bottlenose dolphin (81 taken alive) and rough-toothed dolphin.
- Conservation status: every species targeted at Taiji is currently listed Least Concern globally on the IUCN Red List — the documented damage is to local coastal populations, not to the species worldwide.
- Mercury: Japan’s regulatory limit for total mercury in seafood is 0.4 parts per million. Dolphin meat routinely exceeds it, with a recorded high of roughly 100 ppm in a single bottlenose dolphin.
Those numbers are the reason this article exists. What follows is how the hunt actually works, why the meat is dangerous, and what the captivity industry has to do with it.
The Dolphin Hunt
As the Taiji dolphin hunt begins, local fishers set off to sea in small fishing boats fitted with metal poles on each side, searching for dolphins.
They patrol the coastline and known dolphin territories, often using seabirds – who are attracted to schooling fish that the dolphins prey on – to track down dolphin pods. Once they find a pod, the fishermen radio other fishing boats, which race to the scene while they follow the dolphins, keeping them in sight to ensure they do not slip away.
When sufficient boats have arrived, they begin herding the dolphins by banging on the metal poles fitted to the sides of the boats, which drives the dolphins away as they try to escape the noise.
The fishermen use this method to drive the dolphins into a bay, from which they are herded into Taiji Cove. Once the pod has been herded into the cove, nets are strung across the entrance to prevent the dolphins from escaping. And then the bloodshed begins.
Since 2000 the standard killing method has been to drive a metal rod into the spinal cord just behind the blowhole and plug the wound — a technique Taiji fishermen say shortens the time to death. Veterinary and marine-mammal scientists who reviewed video of the procedure have disputed that, concluding it would not be permitted in any regulated slaughterhouse. The hunt itself is legal under Japanese law: dolphins and other small cetaceans fall outside the International Whaling Commission’s remit — the body that governs commercial whale hunting —, so they are managed entirely by Japan’s own Fisheries Agency, which issues the annual per-species quota that Taiji’s fishermen work to.
The entire pod is captured – old dolphins, dolphins of breeding age, pregnant females, young dolphins, even baby dolphins – the fishermen show no mercy.
The few “lucky” ones spared death are torn away from their family groups and sold to international buyers for use in live dolphin shows or swim-with-dolphins programs.
The experience of being ripped out of the wild, separated from their natural family groups, and thrown into captivity is extremely traumatic indeed. They will live the rest of their lives in miserable conditions imprisoned within tiny pools, their freedom lost forever.
The not-so-lucky are butchered on the beach, and the sea turns red with their blood. The idyllic coastal cove that was a peaceful paradise just hours before is transformed into a horror scene.
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Mercury Contamination
While the international community abhors this senseless cruelty inflicted on these highly intelligent marine mammals, the Japanese government justifies the hunt by declaring that it is a tradition that has been passed down through many generations and consequently it is an essential part of their culture.
Yet, the Japanese people are to a large degree misled and misinformed.
The meat from the slaughtered dolphins is sold for human consumption — but because of mercury contamination, much of it is not safe to eat. Japan’s regulatory limit for total mercury in seafood is 0.4 parts per million (ppm). Dolphin and small-whale meat sold in Japan routinely breaches it: Hokkaido University toxicologist Tetsuya Endo, who has sampled Japanese cetacean meat for two decades, has recorded a peak of roughly 100 ppm in a single bottlenose dolphin — around 250 times the limit.
Mercury is highly toxic and accumulates in the body tissue and fat of animals. Consequently, top predators higher up the food chain, such as dolphins, accumulate more and more mercury from the prey fish they consume, rendering their flesh toxic to eat.
People who eat dolphin meat regularly are at real risk of methylmercury exposure, and there is direct evidence of it in Taiji itself. When Japan’s National Institute for Minamata Disease tested 1,137 Taiji residents, mean hair methylmercury measured 11.00 ppm in men and 6.63 ppm in women, against 2.47 ppm and 1.64 ppm at fourteen other Japanese locations. Forty-three residents exceeded 50 ppm, the level at which mercury poisoning has been documented, and the highest single reading was 139 ppm. Japan’s Ministry of Health has advised since 2003 that children and pregnant women avoid eating whale and dolphin meat regularly.
Many Japanese shoppers are unaware they are eating it at all — partly because the hunt takes place in an area screened off from public access, and partly because of how the meat is labelled.
Dolphin meat is frequently mislabelled — sold as generic “whale meat” or under another species’ name — which hides both its origin and its mercury load from shoppers. It is worth being precise about the conservation picture, because overstating it hands ammunition to the hunt’s defenders: none of the species taken at Taiji is currently globally threatened, and all are listed Least Concern on the IUCN Red List. The measurable damage is local. Researchers analysing Taiji’s own catch records have reported declining catch rates consistent with depletion of the nearby coastal populations that the drive boats reach, and species such as Risso’s dolphins are taken from the same waters year after year.
Ironically, the driving force behind the hunt is not food — it is the live-capture trade. A dolphin killed for meat is worth a small fraction of what a young, unmarked, show-quality animal fetches from an aquarium, which is why hunters routinely drive in a large pod, sort through it for the handful of animals a marine park will buy, kill part of the remainder for meat and release the rest. In the 2025/26 season, 84 dolphins were taken alive out of 1,120 driven into the cove — and it is those 84, not the meat, that make the hunt worth running.
Surplus animals are sometimes released and are otherwise killed for meat. A number of countries now ban the import or public display of wild-caught dolphins while still permitting captive-bred animals — but captive-bred dolphins descend from wild-caught founders, so demand for the drive hunt survives inside legal captive-breeding programmes.
That pressure has produced the hunt’s single biggest setback. In April 2015 the World Association of Zoos and Aquariums (WAZA) suspended the Japanese Association of Zoos and Aquariums (JAZA) over its members’ purchases of Taiji drive-hunt dolphins. Facing expulsion, JAZA members voted in May 2015 to stop acquiring dolphins from the drive hunts. It was a genuine win — but not a complete one: several aquariums, including Enoshima Aquarium and the Shimonoseki Marine Science Museum, resigned from JAZA rather than comply, and demand from buyers outside Japan, particularly in China, has more than replaced the domestic shortfall.
It is also highly lucrative – the trade in wild dolphins, together with the dolphinarium and confined swim-with-dolphin industries they support, represent a multi-billion dollar industry – dolphin meat sold for human consumption is just a cherry on top.
The award-winning documentary, The Cove, produced by The Oceanic Preservation Society (OPS), highlights the plight of Taiji’s dolphins as a team of environmental activists expose the horror and cruelty of the Taiji’s dolphin hunt through daring and adventurous investigative journalism using hidden cameras and microphones to record the barbaric act.
The Cove, released in 2009, won the Academy Award for Best Documentary Feature at the 82nd Academy Awards in March 2010, along with dozens of other international awards. It has been pivotal in stirring up support to put an end to dolphin hunting in Taiji, Japan, and other parts of the world where this occurs.
See Related: Types of Water Pollution You Need To Know
What Can You Do?
While we may shudder at the thought of eating dolphin meat, by supporting live dolphin shows or confined swim-with-dolphin programs, we are, in effect, inadvertently supporting the capture and slaughter of wild dolphins.
While it may be fun to watch a dolphin performing tricks in captivity, it surely is no fun for the dolphin or for the thousands of dolphins that lose their lives every year in a secluded cove in Taiji, Japan, to keep this industry alive.
If you would like to take a more active role, the most effective single step is to refuse to buy a ticket to any dolphin show, swim-with-dolphins programme or dolphin-assisted therapy session anywhere in the world, and to say why when you decline. The 2015 JAZA vote happened because the captivity industry’s own trade body was threatened with expulsion — commercial pressure on aquariums is the lever that has actually moved this hunt. Beyond that, you can sign a petition or support environmental activists such as Dolphin Project and Sea Shepherd, who monitor and document the Taiji season each year, and you can share verified season figures rather than the “20,000 dolphins” number, which is wrong and easy for the hunt’s defenders to discredit.
Taiji Dolphin Hunting: Frequently Asked Questions
How many dolphins are killed in Taiji each year?
In the 2025/26 season, 422 dolphins and small whales were killed at Taiji and 84 were taken alive for aquariums, out of roughly 1,120 driven into the cove — a total take of 506 against a quota of 1,814. Annual kill totals over the last decade have generally run between about 400 and 900 animals, well below the quota.
Is the Taiji dolphin hunt legal?
Yes. Dolphins and other small cetaceans fall outside the International Whaling Commission’s authority, so they are regulated solely by Japan’s Fisheries Agency, which sets an annual per-species quota. The hunt is legal under Japanese law and is licensed by Wakayama Prefecture. International objections are to its cruelty, its mercury risk and its role in supplying the captivity trade, not to a breach of law.
Are the dolphins hunted at Taiji endangered?
Not globally. All nine species on Taiji’s quota list — including bottlenose, striped, Risso’s, spotted and rough-toothed dolphins, melon-headed whales, short-finned pilot whales and false killer whales — are currently classed as Least Concern on the IUCN Red List. The concern is local depletion of the specific coastal populations the drive boats can reach, not worldwide extinction.
Why is dolphin meat dangerous to eat?
Dolphins are long-lived predators near the top of the marine food chain, so methylmercury accumulates in their tissue. Japan’s regulatory limit for total mercury in seafood is 0.4 ppm; sampled dolphin meat has reached roughly 100 ppm. Testing of 1,137 Taiji residents found mean hair mercury of 11.00 ppm in men and 6.63 ppm in women, several times the Japanese average.
Did The Cove stop the hunt?
No, but it changed its economics. The 2009 documentary, which won the Academy Award for Best Documentary Feature in March 2010, brought sustained international scrutiny that culminated in WAZA suspending JAZA in 2015 and JAZA members voting to stop buying Taiji dolphins. The hunt continues, and total take has fallen well below quota, but live capture for aquariums outside Japan has kept it commercially viable.
Related Resources
- Environmental Organizations in Africa
- Environmental Organizations in Europe
- Environmental Organizations in South America
See Related: The Hebridean Whale and Dolphin Trust
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