SHARK VS SHARK

Otodus obliquusvsWhitetip reef shark

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

ExtinctOtodus obliquus×LivingTriaenodon obesus
QUICK VERDICT

Otodus obliquus is about 4.3× longer by these reference values.

Otodus obliquus uses a 9.1 m upper reference, compared with 2.13 m for Whitetip reef shark. 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
AOtodus obliquusestimated to about 9.1 m / 30 ft
BWhitetip reef sharkreported to 2.13 m / 7 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.

MeasureOtodus obliquusWhitetip reef shark
Length referenceestimated to about 9.1 m / 30 ftreported to 2.13 m / 7 ft
Weight referenceNot reliably reconstructedreported near 18.3 kg / 40 lb
Bite forceNo defensible estimate usedUnknownNo dependable maximum foundUnknown
Timeabout 56–45 million years agoTropical Indo-Pacific reefs
DietLarge fishes and marine vertebratesOctopus, fishes and crustaceans
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Otodus obliquus is represented by estimated to about 9.1 m / 30 ft; Whitetip reef shark by reported to 2.13 m / 7 ft. Soft-body dimensions are inferred from teeth and living analogues. The species is usually smaller than its reported maximum.

Bite evidence

Otodus obliquus: No species-specific model is used. Whitetip reef shark: No standardized maximum is used.

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 belonged to the megatooth lineage that later produced megalodon. Its slim body lets it hunt inside reef crevices.

04

TRACE THE CLAIMS

Sources and limits.

Otodus obliquusPaleobiology DatabaseWhitetip reef sharkFlorida MuseumHow we standardize comparisonsRead the methodology →