SHARK VS SHARK

Bull sharkvsPacific 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.

LivingCarcharhinus leucas×LivingSomniosus pacificus
QUICK VERDICT

Pacific sleeper shark is about 1.75× longer by these reference values.

Pacific sleeper shark uses a 7 m upper reference, compared with 4 m for Bull shark. Pacific sleeper shark's weight reference is about 2.9× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ABull sharkreported to 4 m / 13 ft
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.

MeasureBull sharkPacific sleeper shark
Length referencereported to 4 m / 13 ftreported near 7 m / 23 ft
Weight referencereported to 316.5 kg / 698 lblarge-animal estimate about 907 kg / 2,000 lb
Bite force170–5,914 N across studied sizes and bite pointsModeledNo dependable maximum foundUnknown
HabitatCoasts, estuaries and freshwaterCold North Pacific, often deep
DietFish, rays, turtles and other sharksFishes, squid, marine mammals and carrion
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Bull shark is represented by reported to 4 m / 13 ft; Pacific sleeper shark by reported near 7 m / 23 ft. The 4 m figure is a reported maximum; typical mature animals are smaller. Large values often depend on indirect or incomplete records.

Bite evidence

Bull shark: The upper value is a theoretical posterior bite for the largest specimen in a 73–285 cm study series—not a universal adult bite. 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

Its freshwater range is exceptional among large coastal sharks. Rare encounters make its maximum size less certain than familiar coastal species.

04

TRACE THE CLAIMS

Sources and limits.

Bull sharkHabegger et al. (2012) + Florida MuseumPacific sleeper sharkAlaska Department of Fish and GameHow we standardize comparisonsRead the methodology →