SHARK VS SHARK

Pacific sleeper sharkvsWhite shark

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

LivingSomniosus pacificus×LivingCarcharodon carcharias
QUICK VERDICT

Pacific sleeper shark is about 1.17× longer by these reference values.

Pacific sleeper shark uses a 7 m upper reference, compared with 6 m for White shark. White shark's weight reference is about 2.5× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
APacific sleeper sharkreported near 7 m / 23 ft
BWhite sharkabout 6 m / 20 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.

MeasurePacific sleeper sharkWhite shark
Length referencereported near 7 m / 23 ftabout 6 m / 20 ft
Weight referencelarge-animal estimate about 907 kg / 2,000 lbreported to about 2,268 kg / 5,000 lb
Bite forceNo dependable maximum foundUnknownabout 18,000 NModeled
HabitatCold North Pacific, often deepTemperate seas worldwide
DietFishes, squid, marine mammals and carrionFish, rays and marine mammals
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Pacific sleeper shark is represented by reported near 7 m / 23 ft; White shark by about 6 m / 20 ft. Large values often depend on indirect or incomplete records. Maximum length and mass are exceptional upper-end figures.

Bite evidence

Pacific sleeper shark: No standardized maximum is available. White shark: A 3-D finite-element model predicted the bite of a very large individual; it was not measured on a living shark.

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

Rare encounters make its maximum size less certain than familiar coastal species. Its headline bite number is a computer model, not a live-animal measurement.

04

TRACE THE CLAIMS

Sources and limits.

Pacific sleeper sharkAlaska Department of Fish and GameWhite sharkWroe et al. (2008) + Florida MuseumHow we standardize comparisonsRead the methodology →