SHARK VS SHARK

CladoselachevsSand tiger shark

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

ExtinctCladoselache fyleri×LivingCarcharias taurus
QUICK VERDICT

Sand tiger shark is about 1.78× longer by these reference values.

Sand tiger shark uses a 3.2 m upper reference, compared with 1.8 m for Cladoselache. A clean mass ratio is not shown because at least one weight is not reliably reconstructed.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ACladoselacheabout 1.8 m / 6 ft
BSand tiger sharkreported to about 3.2 m / 10.5 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.

MeasureCladoselacheSand tiger shark
Length referenceabout 1.8 m / 6 ftreported to about 3.2 m / 10.5 ft
Weight referenceNot reliably reconstructedreported to about 159 kg / 350 lb
Bite forceNo defensible estimate usedUnknownNo dependable maximum foundUnknown
Timeabout 370 million years agoTemperate and subtropical coasts
DietSmall fishesFishes, rays, squid and crustaceans
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Cladoselache is represented by about 1.8 m / 6 ft; Sand tiger shark by reported to about 3.2 m / 10.5 ft. Calling it a modern-style shark hides major evolutionary distance. Upper records vary by region and source.

Bite evidence

Cladoselache: No usable maximum-force model exists. Sand tiger shark: A reliable comparable maximum was not found.

Living versus extinct

At least one animal is known from fossils. Fossil length, weight and bite estimates depend on which living analogues and scaling equations researchers choose.

Ecology changes the matchup

It was an early shark-like chondrichthyan with a streamlined body. Its protruding teeth look dramatic, but appearance alone does not reveal bite force.

04

TRACE THE CLAIMS

Sources and limits.

CladoselacheSmithsonian National Museum of Natural HistorySand tiger sharkFlorida MuseumHow we standardize comparisonsRead the methodology →