SHARK VS SHARK

Cookiecutter sharkvsEpaulette 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×LivingHemiscyllium ocellatum
QUICK VERDICT

Epaulette shark is about 1.91× longer by these reference values.

Epaulette shark uses a 1.07 m upper reference, compared with 0.56 m for Cookiecutter shark. Cookiecutter shark's weight reference is about 1.67× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ACookiecutter sharkabout 0.56 m / 22 in
BEpaulette sharkreported to 1.07 m / 3.5 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 sharkEpaulette shark
Length referenceabout 0.56 m / 22 inreported to 1.07 m / 3.5 ft
Weight referencelarge-adult reference about 5 kg / 11 lblarge-adult reference about 3 kg / 6.6 lb
Bite forceNo dependable maximum foundUnknownNo dependable maximum foundUnknown
HabitatDeep tropical and subtropical oceansShallow coral reefs of Australia and New Guinea
DietPlugs of tissue from larger animals plus small preyWorms, crustaceans and small fishes
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; Epaulette shark by reported to 1.07 m / 3.5 ft. Weight is a rounded comparison reference. Mass varies strongly with size and is shown only as a reference.

Bite evidence

Cookiecutter shark: Bite shape is documented; a comparable force maximum is not. Epaulette shark: No standardized maximum is used.

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. It can use its fins to walk across reef flats and tolerate low oxygen.

04

TRACE THE CLAIMS

Sources and limits.

Cookiecutter sharkSmithsonian OceanEpaulette sharkAustralian MuseumHow we standardize comparisonsRead the methodology →