Tahlequah, theSouthern Resident killer whalewho famously carried her deceased calf for 17 days in 2018, hastragically losther newestoffspring. The heartbreakingdeathof thecalfreportedly highlights the precarious survival rates of the species and underscores ongoing concerns about the whales’ primary food supply.
Tahlequah, a female orca born around 1998, endured the devastating loss of her newborn, J61, a female calf born in December 2024.
HighlightsOrca Tahlequah lost another newborn after a 2018 ordeal of carrying a dead calf for 17 days.The loss of her calf, J61, highlighted precarious survival rates for Southern Resident killer whales.Critical need for salmon recovery was emphasized for the survival of these endangered orcas.
Researchers from the Center for Whale Research confirmed the death on January 1, 2025, and observed J35 carrying the calf’s body, echoing her previous mourning behavior.
“The death of any calf in the SRKW [southern resident killer whales] population is a tremendous loss, but the death of J61 is particularly devastating, not just because she was a female, who could have one day potentially led her own matriline but also given the history of her mother J35 who has now lost two out of four documented calves – both of which were female,” the Center for Whale Research announced on Wednesday (January 1) onsocial media.
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Tahlequah is a Southern Resident killer whale who famously carried her deceased calf for 17 days in 2018
Image credits:Center for Whale Research
It furtherstated: “The Center for Whale Research has received additional information that as of 1/1/25, J35 has been seen carrying the body of the deceased calf (J61) with her.
“We hope to have more information on the situation through further observation and will provide more details at that time.”
The research center first reported a new calf seen with J pod – one of the three family groups, or pods, that make up the SRKW population, an endangered group oforcasliving primarily in the Pacific Northwest – on December 20.
Scientists subsequently emphasized the critical need for salmon recovery to ensure the survival of the whales and their calves, as they wrote onInstagram: “The Southern Resident killer whale population needs ample access to their food supply, mainly salmon, to survive and thrive.
“Every single birth counts and these whales need enoughfishto be able to support themselves and their calves.
She has now tragically lost her newest offspring
“We continue to advocate for salmon recovery through habitat restoration, removal of dams, and rational management of fisheries in the Pacific Northwest.”
Upon confirming that the calf that had been discovered was J35, Tahlequah’s official alphanumeric designation, on December 24, the researchers shared their worry.
“The team, including multiple experienced killer whale researchers, have expressed concern about the calf’s health based on the behavior of both J35 and J61,” the center wrote onInstagram.
It continued: “Early life is always dangerous for new calves, with a very high mortality rate in the first year.
“J35 is an experiencedmother, and we hope that she is able to keep J61 alive through these difficult early days.”
The heartbreaking death of the calf reportedly highlights the precarious survival rates of the species
Image credits:Ken Balcomb/Center for Whale Research
Image credits:KING 5 Seattle
By the time she finally let the calf go,the killer whale had swum a distance of 1,000 miles (approximately 1609 kilometers) with her late newborn.
Despite her tragic loss, the research center was relieved when it observed at the time that Tahlequah’s physical condition was healthy.
“Her tour of grief is now over and her behavior is remarkably frisky,”the centerannounced in 2018.
It further shared: “Telephoto digital images taken from shore show that this mother whale appears to be in good physical condition (no evidence of “peanut-head”) following her record-setting ordeal.
“The carcass has probably sunk to the bottom of these inland marine waters of the Salish Sea, and researchers may not get a chance to examine it for necropsy.”
Approximately 75% of newborns in the recent two decades following the designation of the Southern Resident killer whale (orca) population as “Endangered” have not survived, and 100% of the pregnancies in the past three years have failed to produce viable offspring, the center regrettably explained in 2018.
“Cannot imagine the amount of grief she must be feeling,” a reader commented
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