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 SETS THEM APART
More than a size contest.
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.
Habitat and diet
Basking shark: Temperate coastal and offshore waters; zooplankton. Megalodon: Warm and temperate seas worldwide; large marine mammals, turtles and fishes.
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.
Fossils change the certainty
At least one animal is known from fossils. Fossil length, weight and bite estimates depend on which living analogues and scaling equations researchers choose.
TRACE THE CLAIMS