SHARK VS SHARK

Pacific sleeper sharkvsWhitetip reef 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×LivingTriaenodon obesus
QUICK VERDICT

Pacific sleeper shark is about 3.3× longer by these reference values.

Pacific sleeper shark uses a 7 m upper reference, compared with 2.13 m for Whitetip reef shark. Pacific sleeper shark's weight reference is about 50× 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
BWhitetip reef sharkreported to 2.13 m / 7 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 sharkWhitetip reef shark
Length referencereported near 7 m / 23 ftreported to 2.13 m / 7 ft
Weight referencelarge-animal estimate about 907 kg / 2,000 lbreported near 18.3 kg / 40 lb
Bite forceNo dependable maximum foundUnknownNo dependable maximum foundUnknown
HabitatCold North Pacific, often deepTropical Indo-Pacific reefs
DietFishes, squid, marine mammals and carrionOctopus, fishes and crustaceans
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; Whitetip reef shark by reported to 2.13 m / 7 ft. Large values often depend on indirect or incomplete records. The species is usually smaller than its reported maximum.

Bite evidence

Pacific sleeper shark: No standardized maximum is available. Whitetip reef 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

Rare encounters make its maximum size less certain than familiar coastal species. Its slim body lets it hunt inside reef crevices.

04

TRACE THE CLAIMS

Sources and limits.

Pacific sleeper sharkAlaska Department of Fish and GameWhitetip reef sharkFlorida MuseumHow we standardize comparisonsRead the methodology →