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Intrepid tails—fluke photos confirm humpback whales mount 14,000 km open ocean crossing to breeding grounds

Phys · · 671 words · By Griffith University
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What to know about Intrepid tails—fluke photos confirm humpback whales mount 14,000 km open ocean crossing to breeding grounds

An international team of scientists used fluke photographs and image-recognition software to document two humpback whales traveling between breeding grounds in Australia and Brazil. The study, published in Royal Society Open Science, suggests these rare long-distance crossings may support the 'Southern Ocean Exchange' hypothesis and be influenced by climate-driven changes in the Southern Ocean.

Propaganda risk 0%
Claims checked 10
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center75%
Right25%

4 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Intrepid tails—fluke photos confirm humpback whales mount 14,000 km open ocean crossing to breeding grounds Sadie Harley Scientific Editor Robert Egan Associate Editor An international team of scientists have documented, for the first time, humpback whales…

Why it matters

The findings set new records for the greatest distances ever confirmed between sightings of individual humpback whales anywhere in the world.

Common ground

The study, "First evidence of bidirectional exchange between distant humpback whale breeding populations in eastern Australia and Brazil," has been published in Royal Society Open Science.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

An international team of scientists used fluke photographs and image-recognition software to document two humpback whales traveling between breeding grounds in Australia and Brazil. The study, published in Royal Society Open Science, suggests these rare long-distance crossings may support the 'Southern Ocean Exchange' hypothesis and be influenced by climate-driven changes in the Southern Ocean.

open_in_new Read the original article: https://phys.org/news/2026-05-intrepid-tails-fluke-photos-humpback.html

analyticsAnalysis

0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 10 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 7
info Single Source 2
help Insufficient Evidence 1
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Claim 1: “An international team of scientists have documented, for the first time, humpback whales traveling between breeding grounds in eastern Australia and Brazil, crossing more than 14,000 kilometers of open ocean.”
CORROBORATED
The Guardian reports a humpback whale made a 15,000km journey from Brazil to Australia, and specifically mentions the exchange between Brazilian and eastern Australian populations.
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wikipedia NEUTRAL — In 2026, a conspiracy theory emerged alleging that the deaths or disappearances of several people, some described online as "scientists" tied to classified or sensitive research, were connected to sec…
https://en.wikipedia.org/wiki/Missing_scientists_conspiracy_…
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wikipedia NEUTRAL — Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is also the world's fifth-largest country by area and the seventh-largest by population, with over 213…
https://en.wikipedia.org/wiki/Brazil
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wikipedia NEUTRAL — This is a list of Category:Jewish scientists by country.
https://en.wikipedia.org/wiki/List_of_Jewish_scientists
+ 3 more evidence sources
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Claim 2: “These two breeding grounds are separated by a minimum straight-line ocean distance of about 14,200 km”
CORROBORATED
The Guardian explicitly states that the distance between these two breeding grounds is about 14,200km.
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wikipedia NEUTRAL — Current and historical relations exist between the Commonwealth of Australia and the Federative Republic of Brazil. Both nations are members of the Cairns Group, G20 and the United Nations. Australia …
https://en.wikipedia.org/wiki/Australia–Brazil_relations
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wikipedia NEUTRAL — Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is also the world's fifth-largest country by area and the seventh-largest by population, with over 213…
https://en.wikipedia.org/wiki/Brazil
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wikipedia NEUTRAL — Brazilian Australians (Portuguese: Brasileiro-Australiano) refers to Australian citizens of Brazilian birth or descent. According to the 2021 Census, 46,720 people in Australia were born in Brazil whi…
https://en.wikipedia.org/wiki/Brazilian_Australians
+ 3 more evidence sources
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Claim 3: “Twenty-two years later, in September 2025, it was spotted alone in Hervey Bay, Australia, representing a travel distance of 15,100 km”
CORROBORATED
The Guardian reports that in September 2025, the whale was spotted in Hervey Bay, representing a travel distance of about 15,100km.
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web search NEUTRAL — In September 2025, it was spotted again in Hervey Bay off the Queensland coast, representing a travel distance of about 15,100km.
https://www.theguardian.com/environment/2026/may/20/humpback…
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web search NEUTRAL — The whales were first caught in nets off Rainbow Beach, and according to information from a whale watching charter business in Hervey Bay, who were informed by the Department of Primary Industries (DP…
https://noosatoday.com.au/news/19-09-2025/whale-and-calf-dra…
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web search NEUTRAL — September 17, 2025 By Humane World for Animals. Report of a mature humpback whale with calf caught in shark net dragged 100km from Rainbow Beach confirmed by Department of Primary Industries | Injury.…
https://hsi.org.au/blog/humane-world-for-animals-australia-r…
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Claim 4: “One whale was first photographed in Hervey Bay, Queensland in 2007, and was seen again in the same area in 2013 before turning up off the coast of São Paulo, Brazil in 2019.”
CORROBORATED
The Guardian explicitly details this specific whale's timeline: photographed in Hervey Bay in 2007 and 2013, and spotted off the coast of São Paulo in 2019.
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wikipedia NEUTRAL — The southern right whale (Eubalaena australis) is a large baleen whale and one of three species of right whale belonging to the genus Eubalaena. Found throughout the Southern Hemisphere, it inhabits o…
https://en.wikipedia.org/wiki/Southern_right_whale
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wikipedia NEUTRAL — Whale watching is the practice of observing whales, dolphins and porpoises (cetaceans) in their natural habitat. Whale watching is mostly a recreational activity (cf. birdwatching), but it can also se…
https://en.wikipedia.org/wiki/Whale_watching
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wikipedia NEUTRAL — Colonial settlers frequently clashed with Indigenous people (on continental Australia) during and after the wave of mass immigration of Europeans into the continent, which began in the late 18th centu…
https://en.wikipedia.org/wiki/List_of_massacres_of_Indigenou…
+ 3 more evidence sources
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Claim 5: “The study drew on 19,283 high-quality fluke photographs collected between 1984 and 2025 from eastern Australia and Latin America, contributed by both scientists and citizen scientists through the global platform Happywhale.”
CORROBORATED
The Guardian confirms the study used 19,283 fluke photos collected between 1984 and 2025 from eastern Australia and Latin America. Other results confirm Happywhale's role in collecting such data.
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web search NEUTRAL — Monitoring whale presence and behaviors. Photographing whale flukes and dorsal fins. Uploading sightings to Happywhale. Educating visitors and communities on ethical whale-watching and conservation.
https://bcssmz.org/across-the-oceans-continents/
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web search NEUTRAL — The study drew on 19,283 fluke photos collected between 1984 and 2025 from eastern Australia and Latin America – and the two whales accounted for “only 0.01% of identified whales”.
https://www.theguardian.com/environment/2026/may/20/humpback…
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web search NEUTRAL — Send us your whale photos, we’ll identify the individuals for fun and for science. We'll share with you what we find!
https://happywhale.com/
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Claim 6: “First evidence of bidirectional exchange between distant humpback whale breeding populations in eastern Australia and Brazil, Royal Society Open Science (2026). DOI: 10.1098/rsos.260251”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to verify the specific DOI or the 2026 publication date for this specific study title.
info
Claim 7: “in more than four decades of data covering nearly 20,000 individual whales, only two such animals were found, representing just 0.01% of identified individuals.”
SINGLE SOURCE
The Guardian mentions that the two whales accounted for 'only 0.01% of identified whales', which aligns with the claim's math (2 / 20,000), but no other independent source confirms the total count of 20,000.
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Claim 8: “By comparing tens of thousands of photographs of whale tails, also known as "flukes," the team identified two individual whales that had been photographed in both eastern Australia and Brazil.”
CORROBORATED
The Guardian confirms the identification of two whales as the 'first recorded exchange in both directions' using fluke photographs. Other search results confirm the use of fluke catalogues for photo-identification in these regions.
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wikipedia NEUTRAL — Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is also the world's fifth-largest country by area and the seventh-largest by population, with over 213…
https://en.wikipedia.org/wiki/Brazil
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wikipedia NEUTRAL — IBM Research is the research and development division for IBM, an American multinational information technology company. IBM Research is headquartered at the Thomas J. Watson Research Center in Yorkto…
https://en.wikipedia.org/wiki/IBM_Research
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wikipedia NEUTRAL — Visitors to Brazil must obtain a visa from one of the Brazilian diplomatic missions unless they are nationals of one of the visa-exempt countries or have the option to obtain an electronic visa. Visa …
https://en.wikipedia.org/wiki/Visa_policy_of_Brazil
+ 3 more evidence sources
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Claim 9: “The other whale was first photographed in 2003 at the Abrolhos Bank—Brazil's main humpback whale nursery off the coast of Bahia”
CORROBORATED
The Guardian confirms the second whale was first photographed in 2003 at the Abrolhos Bank, Brazil's main humpback whale nursery off the coast of Bahia.
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web search NEUTRAL — An updated comparison of the humpback whale photo-id catalogues from the Antarctic Peninsula and the Abrolhos Bank, Brazil.
https://www.car-spaw-rac.org/IMG/pdf/An_updated_comparison_o…
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web search NEUTRAL — Seen with another female on the Abrolhos Bank off the coast of Brazil on August 7th, 1999, the whale simply stuck around long enough for the scientists to snap a few photographs and collect genetic da…
https://www.nationalgeographic.com/science/article/the-curio…
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web search NEUTRAL — The whale was first photographed in 2003 at the Abrolhos Bank, Brazil’s main humpback whale nursery, off the coast of the north-eastern state of Bahia. In September 2025, it was spotted again in Herve…
https://www.theguardian.com/environment/2026/may/20/humpback…
info
Claim 10: “The study, "First evidence of bidirectional exchange between distant humpback whale breeding populations in eastern Australia and Brazil," has been published in Royal Society Open Science.”
SINGLE SOURCE
While the Guardian article discusses the findings of the study, the specific title and publication in 'Royal Society Open Science' are not independently verified by the provided Wikipedia or other web results.
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wikipedia NEUTRAL — Sir Joseph Banks, 1st Baronet (24 February [O.S. 13 February] 1743 – 19 June 1820) was an English naturalist, botanist, and patron of the natural sciences. Banks made his name on the 1766 natural-hist…
https://en.wikipedia.org/wiki/Joseph_Banks
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wikipedia NEUTRAL — Sustainable biofuel refers to biofuels produced in ways that minimise environmental and social impacts while providing a renewable alternative to fossil fuels. Unlike conventional biofuels, which may …
https://en.wikipedia.org/wiki/Sustainable_biofuel
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wikipedia NEUTRAL — William Swainson FLS, FRS (8 October 1789 – 6 December 1855), was an English ornithologist, malacologist, conchologist, entomologist and artist.
https://en.wikipedia.org/wiki/William_Swainson
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.