The only Japan’s male orca is gone. His name was Earth, he was 16 years old and a whole life spent among the aquarium tanks. The structure that housed it since 2015 died on Saturday 3 August at the public aquarium of the port of Nagoya. His disappearance not only leaves a void in the marine park, but strongly reopens the debate on the living conditions of these majestic marine mammals in captivity.
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According to what was communicated by the Aquarium, Earth had started showing signs of malaise on July 31st, refusing food and appearing lethargic. Despite the transfer to a medical tank for care and analyzes, its conditions fell rapidly. His trainers reported that the animal “did not respond and has spent long periods of time on the bottom of the swimming pool, emerging only to breathe”. The death was declared at 12:26 on 3 August. The causes are currently under investigation.
Born on October 13, 2008 at Kamogawa Sea World from her mother Lovey and her father Oscar, Earth has never swam in the open sea. Its history is an intertwining of transfers and family ties built and broken by the logic of captivity. Separated from the mother in 2012, he was then transferred to Nagoya in 2015, where he reunited with his grandmother Stella and met the young aunt Lynn, with whom he developed a strong bond, becoming famous for their synchronized performances. A fragmented family, whose dynamics were decided by man. In March 2024, grandmother Stella had in turn been transferred to the Kobe Suma Sea World.
Now, with the death of Earth, Lynn, his partner as a tank and nephew of Stella, remains alone. An isolation that worries, given that the orcas are extremely complex social animals, which in nature live in stable family groups, called “pods”, fundamental for hunting and socialization. Lynn’s future is uncertain: Nagoya’s aquarium could try to introduce another orca, transfer it elsewhere or leave it in solitude.
Earth’s death reports attention to alarming data. On a global level, there are about 55 orche in captivity, more than half of which is between China and Japan. In the country of the Rising Sun, at the end of 2024, there were seven specimens distributed in three structures. Now remain six.
Life in captivity presents a salty account for these marine predators. One of the most evident manifestations is the collapse of the dorsal fin, a condition that afflicts 80-90% of males in captivity, but rarely observed in nature. To this are added behaviors related to stress such as repetitive swimming, self -harm and aggression. The same life expectancy is drastically reduced: if in nature a male can live up to 50-60 years, in captivity the average is around 30. Earth was only 16. His premature death is a sad reminder of the complex ethical and biological issues that surround the detention of such intelligent and complex animals.
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