Megalodon is about 1.28× longer by these reference values.
Megalodon uses a 15.3 m upper reference, compared with 12 m for Basking shark. Megalodon's weight reference is about 8.0× 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
Basking shark is represented by reported to 12 m / 40 ft; Megalodon by evidence-based upper estimate 14.1–15.3 m / 46–50 ft. The upper length is exceptional; the mass is a rounded comparison estimate. No complete skeleton exists; 15.3 m is an evidence-based maximum from museum specimens, not a tape measurement.
Bite evidence
Basking shark: A comparable maximum-bite study is not available for this filter feeder. Megalodon: Finite-element scaling produced a range, not a directly measured bite.
Living versus extinct
At least one animal is known from fossils. Fossil length, weight and bite estimates depend on which living analogues and scaling equations researchers choose.
Ecology changes the matchup
Its enormous mouth strains plankton; it is not built for a giant predatory bite. Nearly every whole-body number is reconstructed from teeth and comparisons with living sharks.
TRACE THE CLAIMS