Whale shark is about 1.61× longer by these reference values.
Whale shark uses a 12.2 m upper reference, compared with 7.6 m for Common thresher. Whale shark's weight reference is about 62× 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; Whale shark by well documented near 12.2 m / 40 ft. Length comparisons can exaggerate body bulk because the tail is exceptionally long. Exceptional historical lengths exist, but 12.2 m is a conservative comparison value.
Bite evidence
Common thresher: Its hunting performance cannot be reduced to jaw force. Whale shark: Whale sharks filter feed; a comparable maximum bite-force study is not available.
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. The largest living fish is a filter feeder, so a predatory bite ranking would mislead.
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