SHARK VS SHARK

Horn sharkvsZebra shark

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

LivingHeterodontus francisci×LivingStegostoma tigrinum
QUICK VERDICT

Zebra shark is about 2.9× longer by these reference values.

Zebra shark uses a 3.54 m upper reference, compared with 1.22 m for Horn shark. Zebra shark's weight reference is about 3.5× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
AHorn sharkreported to 1.22 m / 4 ft
BZebra sharkreported to 3.54 m / 11.6 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.

MeasureHorn sharkZebra shark
Length referencereported to 1.22 m / 4 ftreported to 3.54 m / 11.6 ft
Weight referencelarge-adult reference about 10 kg / 22 lblarge-adult reference about 35 kg / 77 lb
Bite force128–338 N theoretical, depending on tooth positionModeledNo dependable maximum foundUnknown
HabitatRocky eastern Pacific reefsTropical Indo-Pacific reefs and sand flats
DietUrchins, crabs and mollusksMollusks, crustaceans and fishes
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Horn shark is represented by reported to 1.22 m / 4 ft; Zebra shark by reported to 3.54 m / 11.6 ft. Weight is a rounded adult reference. Its very long tail adds substantially to total length.

Bite evidence

Horn shark: Experiments also measured bites; the displayed range is the study's theoretical maximum from front to rear teeth. Zebra 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

Its rear teeth crush hard prey, and its bite mechanics have been tested directly and modeled. Juveniles have stripes; adults are spotted despite the common name.

04

TRACE THE CLAIMS

Sources and limits.

Horn sharkHuber et al. (2005)Zebra sharkFlorida MuseumHow we standardize comparisonsRead the methodology →