SHARK VS SHARK

Lemon 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.

LivingNegaprion brevirostris×LivingSomniosus pacificus
QUICK VERDICT

Pacific sleeper shark is about 2.3× longer by these reference values.

Pacific sleeper shark uses a 7 m upper reference, compared with 3 m for Lemon shark. Pacific sleeper shark's weight reference is about 3.6× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ALemon sharkcommonly to 3 m / 10 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.

MeasureLemon sharkPacific sleeper shark
Length referencecommonly to 3 m / 10 ftreported near 7 m / 23 ft
Weight referencereported to 250 kg / 551 lblarge-animal estimate about 907 kg / 2,000 lb
Bite forceNo dependable maximum foundUnknownNo dependable maximum foundUnknown
HabitatShallow subtropical coasts and mangrovesCold North Pacific, often deep
DietFishes, rays and crustaceansFishes, squid, marine mammals and carrion
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Lemon shark is represented by commonly to 3 m / 10 ft; Pacific sleeper shark by reported near 7 m / 23 ft. The values are upper-end figures, not a typical adult profile. Large values often depend on indirect or incomplete records.

Bite evidence

Lemon shark: No standardized maximum is available for a fair cross-species comparison. 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

Decades of field research make this one of the best-studied coastal sharks. Rare encounters make its maximum size less certain than familiar coastal species.

04

TRACE THE CLAIMS

Sources and limits.

Lemon sharkFlorida MuseumPacific sleeper sharkAlaska Department of Fish and GameHow we standardize comparisonsRead the methodology →