Humpback whales make record Australia-Brazil lifetime swims

Deutsche Welle · 🇩🇪 public Germany · May 20, 2026 · 521 words · By Mark Hallam

headphones Listen to the eFinder podcast briefing

Generate a natural audio summary of this story

Daily briefing

What to know about Humpback whales make record Australia-Brazil lifetime swims

Humpback whales make record Australia-Brazil lifetime swims May 20, 2026Two humpback whales have been sighted in separate breeding grounds off Australia and Brazil, the first time scientists have seen the species travel such vast distances across the Southern…

Claims checked 9

Techniques found 0

Topics 0

Coverage spectrum

Coverage gap: Low Left coverage

Left0%

Center83%

Right17%

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

What happened

Why it matters

An article published in the Royal Society Open Science journal on Wednesday is the upshot of using tens of thousands of images of the sea-dwelling mammals' unique tails (or flukes) to identify the creatures and their movement habits.

Common ground

One whale was spotted in Queensland, off Australia's eastern coast, in 2007 and then again in 2013.

Perspective signals

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

Follow-up questions

What concrete event or decision sits underneath the headline: Humpback whales make record Australia-Brazil lifetime swims?
What evidence would most clearly confirm or weaken the claim that Two humpback whales have been sighted in separate breeding grounds off Australia and Brazil?
What should readers watch for in the next update to know whether the story is changing?

open_in_new Read the original article: https://www.dw.com/en/researchers-spot-humpback-whales-off-australia-and-brazil-…

fact_checkClaims Checked

eFinder analyzed this article and checked 9 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 5

info Single Source 2

help Insufficient Evidence 1

verified Verified 1

check_circle

Claim 1: “Two humpback whales have been sighted in separate breeding grounds off Australia and Brazil”

CORROBORATED

Multiple independent web search results confirm that two humpback whales were identified as having traveled between breeding grounds in eastern Australia and Brazil.

travel_explore

web search NEUTRAL — Photographic identification confirmed two individual humpback whales traveled between breeding grounds in eastern Australia and Brazil, crossing over 14,000 km of open ocean—setting new records for di…
https://phys.org/news/2026-05-intrepid-tails-fluke-photos-hu…

travel_explore

web search NEUTRAL — Humpback whales are known for roaming long distances across major oceans in predictable patterns, typically following migration routes learned from their mothers. They feed on krill and small fish in …
https://www.winnipegfreepress.com/arts-and-life/life/sci-tec…

travel_explore

web search NEUTRAL — Humpback whales are known for roaming long distances across major oceans in predictable patterns, typically following migration routes learned from their mothers. They feed on krill and small fish in …
https://www.singletonargus.com.au/story/9250165/whales-set-r…

check_circle

Claim 2: “The other whale was first observed off the coast of Bahia in Brazil in 2003, and then 22 years later off Hervey Bay in Queensland, 15,100 kilometers away.”

CORROBORATED

Three independent sources (The Guardian, Intrepid tails, and 'Researchers uncover longest whale journey') confirm the whale was first seen in Bahia, Brazil in 2003 and again in Hervey Bay, Queensland in September 2025.

menu_book

wikipedia NEUTRAL — This list of stage names lists names used by those in the entertainment industry, alphabetically by their stage name's surname followed by their birth name. Individuals who dropped their last name and…
https://en.wikipedia.org/wiki/List_of_stage_names

menu_book

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

menu_book

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

+ 3 more evidence sources

check_circle

Claim 3: “One whale was spotted in Queensland, off Australia's eastern coast, in 2007 and then again in 2013. It subsequently appeared near Sao Paulo, Brazil, in 2019”

CORROBORATED

Two independent sources confirm the sighting timeline: Queensland in 2007 and 2013, and Sao Paulo, Brazil in 2019.

travel_explore

web search NEUTRAL — Humpback whales often have barnacles living on their skin, the most common being the acorn barnacle species Coronula diadema and Coronula reginae, which in turn are sites for attachment for goose barn…
https://en.wikipedia.org/wiki/Humpback_whale

travel_explore

web search NEUTRAL — One was spotted in Queensland in 2007 and then appeared near Sao Paulo, Brazil, in 2019 -- a distance across oceans of 14,200 kilometres (8,823 miles). Another was seen off the coast off Bahia in Braz…
https://today.rtl.lu/news/world/humpback-whales-make-record-…

travel_explore

web search NEUTRAL — 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.
https://phys.org/news/2026-05-intrepid-tails-fluke-photos-hu…

info

Claim 4: “Stephanie Stack is a Griffith University PhD researcher and report co-author”

SINGLE SOURCE

The search results for 'Stephanie' provided general name meanings and lyrics, but no evidence confirming a PhD researcher named Stephanie Stack at Griffith University.

travel_explore

web search NEUTRAL — Stephanie or Stefanie is a feminine name that comes from the Greek name Στέφανος (Stephanos) meaning "wreath, garland, christmas wreath or crown". [1] .
https://en.wikipedia.org/wiki/Stephanie

travel_explore

web search NEUTRAL — Oct 11, 2024 · Subscribed 23K 1.6M views 1 year ago 🔊 Nafees - Stephanie (Lyrics) Stream "Stephanie":...more
https://www.youtube.com/watch?v=4z_fq9_N6Ag

travel_explore

web search NEUTRAL — Dec 13, 2025 · Stephanie is a classic female name that translates directly to “crown” or “garland.” While modern definitions often stop there, the etymology offers a richer story of victory and honor.
https://momlovesbest.com/stephanie-name-meaning

check_circle

Claim 5: “two points separated by roughly 14,200 kilometers (8,823 miles)”

CORROBORATED

The distance of 14,200 km (8,823 miles) is explicitly cited in the RTL Today report and is consistent with the general distance mentioned in other reports (over 14,000 km).

travel_explore

web search NEUTRAL — Click Calculate Distance, and the tool will place a marker at each of the two addresses on the map along with a line between them. The distance between them will appear just above the map in both mile…
https://www.mapdevelopers.com/distance_from_to.php

travel_explore

web search NEUTRAL — Simply enter any desired location into the search function and you will get the shortest distance (air line) between the points, the route (route planner) as well as all important information.
https://www.distance.to/

travel_explore

web search NEUTRAL — Whether you're measuring the distance between two cities, towns, villages, or even precise street addresses, this tool provides accurate results in both kilometers (km) and miles (mi).
https://onlinecompass.net/distance-calculator

info

Claim 6: “Of the thousands of identified whales studied, only 0.01% of the sample was found to have completed such a journey.”

SINGLE SOURCE

While the general event is corroborated, the specific statistic of '0.01% of the sample' is not explicitly mentioned in the provided evidence snippets, though the rarity is noted. I cannot confirm the exact percentage from the provided text.

travel_explore

web search NEUTRAL — A humpback whale has made a 15,000km journey from Brazil to Australia, marking what researchers believe is the longest distance ever documented between sightings of an individual humpback.
https://www.theguardian.com/environment/2026/may/20/humpback…

travel_explore

web search NEUTRAL — A pair of humpback whales swam record-breaking journeys between the eastern shores of Australia and breeding grounds in Brazil, research published on Wednesday found.
https://today.rtl.lu/news/world/humpback-whales-make-record-…

help

Claim 7: “Dr. Cristina Castro is of the Pacific Whale Foundation”

INSUFFICIENT EVIDENCE

No evidence was found in the provided search results regarding Dr. Cristina Castro's affiliation.

check_circle

Claim 8: “The whales feed on krill and small fish in colder waters during the warmer summer months, and then move to more clement tropical waters — like those off Brazil and Australia — to breed during the winters.”

CORROBORATED

Multiple sources confirm the feeding and breeding habits of humpback whales, specifically mentioning feeding on krill/fish in warmer months and breeding in tropical waters like Brazil and Australia in winter.

travel_explore

web search NEUTRAL — Three humpback whales migrating along the eastern Australian coast. (Pacific Whale Foundation via AP). They feed on krill and small fish in the warmer months and breed in tropical waters over winter.
https://www.sciencealert.com/two-whales-just-broke-a-migrati…

travel_explore

web search NEUTRAL — Humpback whales are known for roaming long distances across major oceans in predictable patterns, typically following migration routes learned from their mothers. They feed on krill and small fish in …
https://www.news4jax.com/tech/2026/05/19/two-humpback-whales…

travel_explore

web search NEUTRAL — Humpback whales are known for roaming long distances across major oceans in predictable patterns, typically following migration routes learned from their mothers. They feed on krill and small fish in …
https://www.thesenior.com.au/story/9250165/whales-set-record…

verified

Claim 9: “An article published in the Royal Society Open Science journal on Wednesday is the upshot of using tens of thousands of images of the sea-dwelling mammals' unique tails (or flukes) to identify the creatures and their movement habits.”

VERIFIED

The evidence specifically names the study 'First evidence of bidirectional exchange between distant humpback whale breeding populations in eastern Australia and Brazil' and confirms its publication in the journal Royal Society Open Science.

travel_explore

web search NEUTRAL — 2022 study published in the journal Energy Policy.
https://www.sciencedirect.com/science/article/pii/S030142152…

travel_explore

web search NEUTRAL — A study recently published in the medical journal JAMA.
https://jamanetwork.com/journals/jamanetworkopen/fullarticle…

travel_explore

web search NEUTRAL — 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.
https://phys.org/news/2026-05-intrepid-tails-fluke-photos-hu…

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.