SHARK VS SHARK

CladoselachevsGoblin 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×LivingMitsukurina owstoni
QUICK VERDICT

Goblin shark is about 3.4× longer by these reference values.

Goblin shark uses a 6.17 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
BGoblin sharkphoto-based estimates to 5.4–6.17 m / 18–20 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.

MeasureCladoselacheGoblin shark
Length referenceabout 1.8 m / 6 ftphoto-based estimates to 5.4–6.17 m / 18–20 ft
Weight referenceNot reliably reconstructedlarge specimen reported near 210 kg / 463 lb
Bite forceNo defensible estimate usedUnknownNo dependable maximum foundUnknown
Timeabout 370 million years agoDeep continental slopes worldwide
DietSmall fishesFishes, 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; Goblin shark by photo-based estimates to 5.4–6.17 m / 18–20 ft. Calling it a modern-style shark hides major evolutionary distance. The longest figures come from regression estimates based on photographs.

Bite evidence

Cladoselache: No usable maximum-force model exists. Goblin shark: Jaw speed and protrusion are not the same measurement as bite force.

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 jaws shoot forward rapidly; maximum body size remains uncertain.

04

TRACE THE CLAIMS

Sources and limits.

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