Photo via Toronto Star

Another beluga whale dies at Chicago aquarium after rescue mission from Canada park

Read the original at Toronto Star ↗
Cite

Mayes-osterman, C. (2026, September 22). Another beluga whale dies at Chicago aquarium after rescue mission from Canada park. Toronto Star. https://www.thestar.com/news/world/united-states/another-beluga-whale-dies-at-chicago-aquarium-after-rescue-mission-from-canada-park/article_1282a43c-be5d-5e7f-9b3e-cc7a4e181a6b.html

Dated when The Aporia collected the article, usually within hours of publication. Check the original for its exact date and byline.

Toronto Star · collected 2026-09-22 · by Cybele Mayes-osterman

Quick Summary

A 26-year-old female beluga whale named Osiris died at Chicago’s Shedd Aquarium on Monday, following a rescue from a closed Canadian marine park earlier this year. This is the third beluga to die since being relocated to various U.S. and Spanish aquariums in an international effort that saved 30 whales from euthanasia at Marineland in Niagara Falls, Ontario. The sudden death of Osiris highlights the significant health challenges these animals face when adjusting to new environments; she had struggled with eating regularly since arriving at Shedd Aquarium in August.
Written by AI on 2026-09-22, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

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 2026-11-02, grounded in this article and the 8 other(s) covering the same event.

Story

📰 Marineland Beluga Deaths
Health · 9 article(s) covering the same event. Compare every outlet's account →

Compared with similar articles

This article reads unscored and hedges 31% of its claims. Each row says how that neighbour differs.
The Independent
Hedges 5 of 23 claims Outlet record 59/100
CBC News
Hedges 3 of 29 claims Outlet record 74/100
Toronto Star
Hedges 3 of 29 claims Outlet record 64/100
The Globe and Mail
Hedges 1 of 6 claims Outlet record 52/100
New York Post
Hedges 4 of 15 claims Outlet record 66/100
Toronto Star
Hedges 1 of 19 claims Outlet record 64/100
“The articles describe different belugas dying at different locations (Chicago and Spain), though they are part of the same whale relocation effort.”
Global News
Hedges 3 of 33 claims Outlet record 63/100
“The articles describe the death of two different belugas at separate locations (Spain and Chicago) within the context of a larger whale relocation, not the same specific incident.”
CBC News
Hedges 2 of 54 claims Outlet record 74/100
Toronto Star
Hedges 2 of 34 claims Outlet record 64/100
The Globe and Mail
Hedges 0 of 6 claims Outlet record 52/100
“While both articles discuss the death of beluga whales moved from Marineland in Canada to various aquariums, they describe different deaths occurring at distinct locations and times.”
How this article was measured signals, leaning charts, publisher record, byline, topics and claims

Signals How these are calculated →

Claims extracted
36
sentences that state something as happening or true
Uncertain
31%
11 of 36 hedged ("reportedly", "may", "according to")
Leaning
not political
takes no side on a contested political question
Publisher signals
64/100
Toronto Star's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
9
Health
Same framing elsewhere
1
articles that frame the event the way this one does
Analyzed 2026-09-22 · how these are computed

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Publisher

Toronto Star · 11028 article(s) · 28 correction(s) detected
Running correction rate · 28 correction(s)
2026-10-26
Correction
2026-10-24
Correction
2026-10-07
Correction
2026-09-24
Correction

Who wrote this

Cybele Mayes-osterman
6 article(s) here · 1 carrying a prediction
🔮 A federal immigration officer charged with aggravated assault after he ran over a Mexican man with his car in Houston will turn himself in on Monday, according to his attorney.
🔮 It was not known where Exum could be reached.
🔮 “When Shedd was asked to help with this rescue, we understood that these animals arrived with significant vulnerabilities and that the outcome for every individual could not be guaranteed,” the Shedd Aquarium said in a statement.
🔮 The two beluga whales rehomed at Georgia Aquarium are “settling in nicely,” although it will take months before they are fully adjusted, the aquarium said in an email to AP.
Also by Cybele Mayes-osterman
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 6 articles by Cybele Mayes-osterman →

Topics

CHICAGO Canadian Marineland Shedd Spain

Subjects

Marineland ORG · 4× Osiris PERSON · 4× CHICAGO GPE · 3× Canadian NORP · 3× Spain GPE · 3× Jelly Bean PERSON · 2× Ontario GPE · 2× SeaWorld ORG · 2× Shedd GPE · 2× the Shedd Aquarium ORG · 2×

Narrative

Andrew Trites, the director of the University of British Columbia’s Marine Mammal Research Unit, said it was concerning that the four belugas had died “so shortly after arriving in their new homes.” The belugas were in small, confined spaces on the flights out of Marineland, but that’s not out of the ordinary for them, Trites said.
framing: mixed · carried by 1 article(s) · first seen 2026-09-22
🔮 “When Shedd was asked to help with this rescue, we understood that these animals arrived with significant vulnerabilities and that the outcome for every individual could not be guaranteed,” the Shedd Aquarium said in a statement.

Claims (36 extracted, 11 hedged)

A third beluga has died at a Chicago aquarium after being rescued this summer from a shuttered Canadian marine park in a complex international operation that moved 30 whales to aquariums in the U.S. and Spain. asserted
that → die → U.S.
Osiris, a 26-year-old female whale, died on Monday, Chicago’s Shedd Aquarium said in a statement. asserted
Aquarium → die → statement
The death comes less than a week after a fourth beluga, named Jelly Bean, died since it was rehomed at Oceanogràfic de València in Spain. asserted
it → come → Spain
The deaths were sudden and unexpected as their health wavered amid the challenges of adjusting to a new home, according to statements from the aquariums. uncertain
health → waver → aquariums
Beluga whales are particularly vulnerable to changes in their environment, like climate change, pollution and other sources of stress, according to the National Oceanic and Atmospheric Association. uncertain
whales → accord → Association
Beluga whales native to the Cook Inlet on Alaska’s coast are classified as an endangered species, and their population rapidly declined by nearly 80% from 1979 to 2018. asserted
population → classify → 2018
“When Shedd was asked to help with this rescue, we understood that these animals arrived with significant vulnerabilities and that the outcome for every individual could not be guaranteed,” the Shedd Aquarium said in a statement. uncertain
Aquarium → ask → statement
The belugas struggled to adapt to the aquarium The Shedd Aquarium took in 10 of the 30 belugas and four dolphins stranded at Marineland, an Ontario park that closed years ago and could no longer care for them. uncertain
that → struggle → them
The Canadian government signed off on a last-minute agreement to move its last captive whales out of the country earlier this year, saving them from euthanasia. asserted
government → sign → euthanasia
The belugas came from the Marineland park and zoo in Niagara Falls, Ontario, which announced in early 2023 that it was for sale and closed to the public in late summer 2024. asserted
it → come → summer
Twenty whales — 19 belugas and one killer whale — had died at Marineland since 2019, according to provincial government data obtained through freedom of information laws and official statements. uncertain
whales → die → laws
The rescued belugas were moved in custom-made slings and temperature-controlled containers, Shedd staff told The Associated Press. asserted
staff → rescue → Press
Aquarium personnel traveled to Marineland to examine their health records in preparation for the move. asserted
personnel → travel → move
They have monitored their health minute-by-minute since they arrived, the aquarium staff said. asserted
staff → monitor → minute
Peekachu and Rain died at the Shedd in late August and early September after arriving from Canada. asserted
Peekachu → die → Canada
Another beluga that had lived at the aquarium for decades died around the same time. asserted
that → live → time
Osiris was a “whale of clinical concern” since she arrived, according to the aquarium. uncertain
she → arrive → aquarium
The whale did not eat as consistently as her fellow animals, which complicated the efforts to keep her well-fed and hydrated, according to the statement. uncertain
which → eat → statement
“Osiris experienced periods of meaningful progress, both nutritionally and socially, but her overall condition remained closely monitored,” the aquarium stated. asserted
aquarium → experience → progress
Osiris’ caretakers noticed sudden changes in her behavior and breathing patterns the morning of her death, according to the aquarium. uncertain
caretakers → notice → aquarium
She was moved to the medical habitat, but “her condition declined rapidly,” and she “passed away despite lifesaving efforts.” asserted
she → move → efforts
A beluga sent to Spain died suddenly asserted
beluga → send → Spain
Jelly Bean, the whale that died at Oceanogràfic de València, also died “suddenly and unexpectedly,” according to José Rafael Serra, a spokesperson for the facility. uncertain
that → die → facility
The whale “experienced feeding difficulties, prompting the veterinary team to intensify her monitoring,” despite periods of improvement, Serra said in an email. asserted
Serra → experience → email
The Spanish aquarium took in two of Marineland’s beluga whales, including Jelly Bean. asserted
aquarium → take → Bean
The Georgia Aquarium and SeaWorld locations in San Diego and San Antonio have also accepted whales from the Canadian park. asserted
Aquarium → accept → park
The two rescued whales at the Georgia Aquarium showed decreased appetites and were examined, but no issues were found, the aquarium said in a social media post Friday. asserted
aquarium → rescue → post
The whales at SeaWorld are in “stable health,” according to AnneMarie Iturrizaga, a spokesperson for the company that owns the parks. uncertain
that → accord → parks
The Shedd Aquarium notified the NOAA of Osiris’ death Monday, according to John Chu, a spokesperson for NOAA Fisheries. uncertain
Aquarium → notify → Fisheries
Within 30 days of the whales’ deaths, the aquarium must formally submit their names and causes of death, and on request, provide copies of necropsy reports, Chu said in an email earlier this month. asserted
Chu → submit → email
The Shedd Aquarium said it will conduct necropsies into the whales and will share the results when they are confirmed. asserted
they → say → results
Andrew Trites, the director of the University of British Columbia’s Marine Mammal Research Unit, said it was concerning that the four belugas had died “so shortly after arriving in their new homes.” The belugas were in small, confined spaces on the flights out of Marineland, but that’s not out of the ordinary for them, Trites said. asserted
Trites → say → them
The whales often swim in narrow spaces between sheets of ice, and “should be reasonably well adapted to that sort of condition,” he said. asserted
he → swim → condition
“Four animals have died so shortly after arriving in the new homes, and that’s what stands out to me as being surprising,” Trites said. asserted
Trites → die → me
Mayes-Osterman reported from Chicago, and Associated Press reporter Ryan J. Foley contributed. asserted
Foley → report → Chicago
Report for America is a nonprofit national service program that places journalists in local newsrooms to report on undercovered issues. asserted
that → place → issues
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