SHARK VS SHARK

Cookiecutter sharkvsDwarf lanternshark

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×LivingEtmopterus perryi
QUICK VERDICT

Cookiecutter shark is about 2.7× longer by these reference values.

Cookiecutter shark uses a 0.56 m upper reference, compared with 0.21 m for Dwarf lanternshark. Cookiecutter shark's weight reference is about 25× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ACookiecutter sharkabout 0.56 m / 22 in
BDwarf lanternsharkabout 0.21 m / 8.3 in
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 sharkDwarf lanternshark
Length referenceabout 0.56 m / 22 inabout 0.21 m / 8.3 in
Weight referencelarge-adult reference about 5 kg / 11 lbrough reference about 0.2 kg / 0.4 lb
Bite forceNo dependable maximum foundUnknownNo dependable maximum foundUnknown
HabitatDeep tropical and subtropical oceansDeep Caribbean slopes
DietPlugs of tissue from larger animals plus small preySmall crustaceans and 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; Dwarf lanternshark by about 0.21 m / 8.3 in. Weight is a rounded comparison reference. Tiny sample sizes make the exact maximum provisional.

Bite evidence

Cookiecutter shark: Bite shape is documented; a comparable force maximum is not. Dwarf lanternshark: No standardized maximum is available.

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. One of the smallest known sharks also produces light.

04

TRACE THE CLAIMS

Sources and limits.

Cookiecutter sharkSmithsonian OceanDwarf lanternsharkSmithsonian OceanHow we standardize comparisonsRead the methodology →