SHARK VS SHARK

Blue sharkvsHorn shark

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

LivingPrionace glauca×LivingHeterodontus francisci
QUICK VERDICT

Blue shark is about 3.1× longer by these reference values.

Blue shark uses a 3.8 m upper reference, compared with 1.22 m for Horn shark. Blue shark's weight reference is about 21× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ABlue sharkabout 3.8 m / 12.5 ft
BHorn sharkreported to 1.22 m / 4 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.

MeasureBlue sharkHorn shark
Length referenceabout 3.8 m / 12.5 ftreported to 1.22 m / 4 ft
Weight referencereported near 206 kg / 454 lblarge-adult reference about 10 kg / 22 lb
Bite forceNo dependable maximum foundUnknown128–338 N theoretical, depending on tooth positionModeled
HabitatOpen temperate and tropical oceansRocky eastern Pacific reefs
DietSmall fishes and squidUrchins, crabs and mollusks
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Blue shark is represented by about 3.8 m / 12.5 ft; Horn shark by reported to 1.22 m / 4 ft. Upper records are uncommon; most adults are lighter. Weight is a rounded adult reference.

Bite evidence

Blue shark: No comparable maximum is used. Horn shark: Experiments also measured bites; the displayed range is the study's theoretical maximum from front to rear teeth.

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 long fins and slender build matter more than raw bulk. Its rear teeth crush hard prey, and its bite mechanics have been tested directly and modeled.

04

TRACE THE CLAIMS

Sources and limits.

Blue sharkFlorida MuseumHorn sharkHuber et al. (2005)How we standardize comparisonsRead the methodology →