SHARK VS SHARK

Cookiecutter sharkvsMegamouth shark

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

LivingIsistius brasiliensis×LivingMegachasma pelagios
QUICK VERDICT

Megamouth shark is about 13× longer by these reference values.

Megamouth shark uses a 7.1 m upper reference, compared with 0.56 m for Cookiecutter shark. Megamouth shark's weight reference is about 243× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ACookiecutter sharkabout 0.56 m / 22 in
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.

MeasureCookiecutter sharkMegamouth shark
Length referenceabout 0.56 m / 22 inreported to about 7.1 m / 23 ft
Weight referencelarge-adult reference about 5 kg / 11 lbreported near 1,215 kg / 2,679 lb
Bite forceNo dependable maximum foundUnknownNot meaningfully establishedUnknown
HabitatDeep tropical and subtropical oceansDeep tropical and subtropical oceans
DietPlugs of tissue from larger animals plus small preyKrill and other plankton
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Cookiecutter shark is represented by about 0.56 m / 22 in; Megamouth shark by reported to about 7.1 m / 23 ft. Weight is a rounded comparison reference. Sparse specimens make a true maximum difficult to establish.

Bite evidence

Cookiecutter shark: Bite shape is documented; a comparable force maximum is not. Megamouth shark: This filter feeder lacks a comparable maximum-bite study.

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

Its bite removes a round plug; size alone does not predict ecological impact. Known from relatively few encounters, it still carries major uncertainty.

04

TRACE THE CLAIMS

Sources and limits.

Cookiecutter sharkSmithsonian OceanMegamouth sharkFlorida MuseumHow we standardize comparisonsRead the methodology →