SHARK VS SHARK

Dwarf lanternsharkvsPacific sleeper shark

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

LivingEtmopterus perryi×LivingSomniosus pacificus
QUICK VERDICT

Pacific sleeper shark is about 33× longer by these reference values.

Pacific sleeper shark uses a 7 m upper reference, compared with 0.21 m for Dwarf lanternshark. Pacific sleeper shark's weight reference is about 4535× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ADwarf lanternsharkabout 0.21 m / 8.3 in
BPacific sleeper sharkreported near 7 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.

MeasureDwarf lanternsharkPacific sleeper shark
Length referenceabout 0.21 m / 8.3 inreported near 7 m / 23 ft
Weight referencerough reference about 0.2 kg / 0.4 lblarge-animal estimate about 907 kg / 2,000 lb
Bite forceNo dependable maximum foundUnknownNo dependable maximum foundUnknown
HabitatDeep Caribbean slopesCold North Pacific, often deep
DietSmall crustaceans and fishesFishes, squid, marine mammals and carrion
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Dwarf lanternshark is represented by about 0.21 m / 8.3 in; Pacific sleeper shark by reported near 7 m / 23 ft. Tiny sample sizes make the exact maximum provisional. Large values often depend on indirect or incomplete records.

Bite evidence

Dwarf lanternshark: No standardized maximum is available. Pacific sleeper shark: 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

One of the smallest known sharks also produces light. Rare encounters make its maximum size less certain than familiar coastal species.

04

TRACE THE CLAIMS

Sources and limits.

Dwarf lanternsharkSmithsonian OceanPacific sleeper sharkAlaska Department of Fish and GameHow we standardize comparisonsRead the methodology →