Common thresher is about 14× longer by these reference values.
Common thresher uses a 7.6 m upper reference, compared with 0.56 m for Cookiecutter shark. Common thresher's weight reference is about 68× heavier.
ON THE SAME SCALE
Human. Bus. Whale.
Pick your reference.
Length bars use upper comparison values and do not show body depth, tail proportion or typical adult size. A long thresher tail, for example, does not equal whale-shark body mass.
THE NUMBERS
Side by side.
WHAT THE DATA CAN SAY
Size is not the whole animal.
Length and weight
Common thresher is represented by reported to 7.6 m / 24.9 ft; Cookiecutter shark by about 0.56 m / 22 in. Length comparisons can exaggerate body bulk because the tail is exceptionally long. Weight is a rounded comparison reference.
Bite evidence
Common thresher: Its hunting performance cannot be reduced to jaw force. Cookiecutter shark: Bite shape is documented; a comparable force maximum is not.
Living versus extinct
Both species are living, but record-sized individuals are rare. These upper references should not be read as normal adult size.
Ecology changes the matchup
Much of its length is tail, which it uses to stun prey. Its bite removes a round plug; size alone does not predict ecological impact.
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