SHARK VS SHARK

CretoxyrhinavsMegamouth shark

Length, weight and bite evidence—plus context from a human, city bus and blue whale. Every number below carries its uncertainty with it.

ExtinctCretoxyrhina mantelli×LivingMegachasma pelagios
QUICK VERDICT

Megamouth shark is about 1.01× longer by these reference values.

These animals are effectively close in maximum-length terms, so measurement uncertainty can matter more than the apparent difference. A clean mass ratio is not shown because at least one weight is not reliably reconstructed.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ACretoxyrhinaestimated to about 7 m / 23 ft
BMegamouth sharkreported to about 7.1 m / 23 ft
REFAdult human1.8 m · about 80 kg

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.

02

THE NUMBERS

Side by side.

MeasureCretoxyrhinaMegamouth shark
Length referenceestimated to about 7 m / 23 ftreported to about 7.1 m / 23 ft
Weight referenceNot reliably reconstructedreported near 1,215 kg / 2,679 lb
Bite forceNo defensible estimate usedUnknownNot meaningfully establishedUnknown
Timeabout 107–73 million years agoDeep tropical and subtropical oceans
DietLarge fishes and marine reptilesKrill and other plankton
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Cretoxyrhina is represented by estimated to about 7 m / 23 ft; Megamouth shark by reported to about 7.1 m / 23 ft. Length is reconstructed from fossils; mass is too model-dependent for a single figure here. Sparse specimens make a true maximum difficult to establish.

Bite evidence

Cretoxyrhina: TuffShark does not scale a bite value without a published species-specific model. Megamouth shark: This filter feeder lacks a comparable maximum-bite study.

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

Teeth and rare skeletal material point to a large, fast lamniform predator. Known from relatively few encounters, it still carries major uncertainty.

04

TRACE THE CLAIMS

Sources and limits.

CretoxyrhinaSmithsonian National Museum of Natural HistoryMegamouth sharkFlorida MuseumHow we standardize comparisonsRead the methodology →