Infact
86 / 100
True

The text asks which animal's heart beats only 9 times per minute, with options including a blue whale.

Infact verdict: True (86/100).

The claim that a blue whale's heart beats only 9 times per minute is generally accurate but slightly misleading. Evidence shows that a blue whale's heart can beat as few as 2 times per minute when diving and up to 37 times per minute when surfacing. However, it is commonly reported that the heart rate is between 5 to 10 beats per minute on average. Therefore, the claim is mostly true but oversimplified.

September 23, 2026 Language: en 1 claim analyzed
How is this score determined? →

Individual claims

86
True Science
A blue whale's heart beats only 9 times per minute.
The claim is mostly accurate. Evidence indicates that a blue whale's heart beats between 5 to 10 times per minute on average, with variations depending on activity. This aligns closely with the claim of 9 beats per minute, making it mostly true but slightly oversimplified.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 80
Web Consensus Weight 40
Source Quality Score 80
Source Quality Weight 20
Llm Reasoning Score 70
Llm Reasoning Weight 40
Llm Reasoning Score Raw 70
Weighted Total 86
Evidence Summary 2 web sources confirm the heart rate range of 5-10 beats per minute.

Related fact-checks

Check any claim, instantly

Free AI-powered fact-checking — on every platform you already use.