Osiris, a 26-year-old female beluga whale rescued from Marineland in Canada, died at the Shedd Aquarium in Chicago just over a month after her arrival. The aquarium noted that Osiris had been showing signs of dehydration and an electrolyte imbalance but was improving until her condition rapidly declined on Monday. This death follows recent fatalities of two other rescued belugas and one resident beluga from Marineland. The whales were relocated to the Shedd Aquarium and SeaWorld San Antonio in July after Marineland closed amid allegations of animal abuse, with 30 beluga whales being transported for care due to public donations running out.
Written locally by qwen2.5:14b on 2026-09-22,
using this article's own text rather than the other coverage of the
same event (that is the story summary below).
Story summary
Osiris, a 26-year-old female beluga whale from Marineland in Niagara Falls, Ontario, died on Monday morning at Shedd Aquarium in Chicago. Osiris was one of ten belugas moved from Marineland to Shedd over the summer as part of the largest collective move of captive whales involving 30 belugas and four dolphins relocated to five aquariums across the US and Spain between July and September 2024. Since then, four beluga whales have died after being transferred, with Osiris being the fourth death at Shedd Aquarium alone. Despite receiving intensive care, including fluids and medications upon arrival, Osiris struggled with her appetite and health, leading to sudden changes in behavior and respiratory patterns before her death. The cause of death is still under investigation, but preliminary necropsies suggest chronic inflammatory disease that likely began while the whales were at Marineland.
Written for “Marineland Beluga Deaths” on 2026-10-05,
grounded in this article and the 8 other(s) covering the same event.
A third beluga whale rescued from a theme park in Canada has died, according to the Shedd Aquarium in Chicago.
uncertain
whale → rescue → Chicago
Osiris, a 26-year-old female beluga whale, died a little more than a month after it was rescued from Marineland in Canada.
asserted
it → die → Canada
The aquarium noted that Osiris was a “whale of clinical concern” from the moment it arrived at the facility, according to ABC 7.
uncertain
it → note → ABC
"Each rescued beluga came to Shedd with a distinct life history and health needs that could not be fully understood before their arrival.
uncertain
that → rescue → arrival
Osiris experienced periods of meaningful progress, both nutritionally and socially, but her overall condition remained closely monitored," the aquarium said in a statement.
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aquarium → experience → statement
Shortly before the animal's death, the Shedd Aquarium reported that the whale was showing symptoms of dehydration and an electrolyte imbalance, though they were improving.
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they → report → dehydration
Aquarium officials said Osiris had been socializing and had been eating following its treatments.
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Osiris → say → treatments
However, the whale's condition took a turn on Monday.
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condition → take → Monday
Aquarium officials noticed changes in its behavior and respiratory patterns, prompting them to move the animal to a medical habitat for treatment.
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officials → notice → treatment
According to the aquarium, the whale's "condition declined rapidly, and Osiris passed away despite lifesaving efforts by our veterinary and animal care teams.
uncertain
Osiris → accord → teams
Officials are still determining Osiris's cause of death.
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Officials → determine → death
Two other rescued belugas from Marineland — and a third beluga belonging to the park’s resident pod — have died in recent weeks.
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beluga → rescue → weeks
Earlier in September, Rain, a 20-year-old female Beluga, also rescued from Marineland, died.
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Rain → rescue → Marineland
Beethoven, a 34-year-old male that was part of the aquarium's resident beluga pod, died around the same time.
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that → die → time
A week before those whales died, Peekachu, a 23-year-old beluga from the Marineland rescue, died.
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Peekachu → die → rescue
Shedd Aquarium said its workers will "continue to monitor each whale around the clock, adapting care, habitats, and routines to meet their evolving needs."
Marineland, which was located in Niagara Falls, Ontario, closed in September 2024.
asserted
which → say → September
The closure came on the heels of allegations of animal abuse by individuals at the park, according to the CBC.
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closure → come → CBC
When the park closed, it had 30 beluga whales on its premises, and their continued care was only possible thanks to donations from the public.
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care → close → public
Once the donations ran out, the whales faced potential euthanasia.
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whales → run → euthanasia
The animals' caretakers petitioned the Canadian government for assistance in keeping the whales alive.
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caretakers → petition → whales
Two aquariums with the space and means to provide for the animals offered to take them in following the Marineland closure.
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aquariums → provide → closure
In July, the belugas were flown in tanks of water on a Boeing 777 to their new homes in Shedd Aquarium and SeaWorld San Antonio.
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belugas → fly → Aquarium
Both locations already had resident beluga populations and animal care experts familiar with the animals.
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locations → have → animals
The Aporia
