Infact
Infact Get the full experience — check any claim instantly
Open
82
True unknown

The text discusses the ability of albatrosses and dolphins to sleep while flying or swimming, with part of their brain remaining active.

Both claims about albatrosses and dolphins sleeping while partially awake have strong support from scientific observations. Albatrosses utilize unihemispheric sleep to rest while flying, supported by multiple credible sources. Similarly, dolphins can swim while sleeping, using one part of their brain to stay alert and avoid drowning, corroborated by several scientific studies. Both claims are well-supported by reliable sources and align with established scientific understanding of animal behavior.

April 22, 2026 Language: en 2 claims analyzed

Individual Claims

84
True animal behavior
Albatrosses can sleep during flight with one part of their brain.
Multiple sources confirm that albatrosses use unihemispheric sleep, allowing them to sleep while flying. This behavior enables them to remain partially alert, making it possible to rest mid-flight. Evidence includes a detailed summary of flight and sleep patterns in albatrosses.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 90
Web Consensus Weight 50
Source Quality Score 85
Source Quality Weight 25
Llm Reasoning Score 95
Llm Reasoning Weight 25
Weighted Total 84
Evidence Summary Multiple sources confirm albatrosses sleep while flying using unihemispheric sleep.
79
Mostly True animal behavior
Dolphins can swim while sleeping.
Dolphins exhibit a behavior known as unihemispheric slow-wave sleep, allowing them to rest while swimming. Various studies and sources corroborate this, providing evidence for the claim.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 85
Web Consensus Weight 50
Source Quality Score 80
Source Quality Weight 25
Llm Reasoning Score 90
Llm Reasoning Weight 25
Weighted Total 79
Evidence Summary Dolphins swim while sleeping is supported by scientific studies and sources.

Try Infact

Instant AI-powered fact-checking — on any platform

Chrome Extension WhatsApp Telegram Telegram Group Telegram Channel