SHARK VS SHARK

Megamouth sharkvsSqualicorax

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

LivingMegachasma pelagios×ExtinctSqualicorax pristodontus
QUICK VERDICT

Megamouth shark is about 1.42× longer by these reference values.

Megamouth shark uses a 7.1 m upper reference, compared with 5 m for Squalicorax. 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
AMegamouth sharkreported to about 7.1 m / 23 ft
BSqualicoraxestimated to about 5 m / 16 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.

MeasureMegamouth sharkSqualicorax
Length referencereported to about 7.1 m / 23 ftestimated to about 5 m / 16 ft
Weight referencereported near 1,215 kg / 2,679 lbNot reliably reconstructed
Bite forceNot meaningfully establishedUnknownNo defensible estimate usedUnknown
TimeDeep tropical and subtropical oceansabout 85–66 million years ago
DietKrill and other planktonFishes, marine reptiles and carrion
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Megamouth shark is represented by reported to about 7.1 m / 23 ft; Squalicorax by estimated to about 5 m / 16 ft. Sparse specimens make a true maximum difficult to establish. Body length and ecology are reconstructed from incomplete fossil evidence.

Bite evidence

Megamouth shark: This filter feeder lacks a comparable maximum-bite study. Squalicorax: Bite traces show feeding, not maximum force.

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

Known from relatively few encounters, it still carries major uncertainty. Serrated teeth and bite traces show a broad, opportunistic diet.

04

TRACE THE CLAIMS

Sources and limits.

Megamouth sharkFlorida MuseumSqualicoraxPaleobiology DatabaseHow we standardize comparisonsRead the methodology →