SHARK VS SHARK

Basking sharkvsOtodus obliquus

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

LivingCetorhinus maximus×ExtinctOtodus obliquus
QUICK VERDICT

Basking shark is about 1.32× longer by these reference values.

Basking shark uses a 12 m upper reference, compared with 9.1 m for Otodus obliquus. 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
ABasking sharkreported to 12 m / 40 ft
BOtodus obliquusestimated to about 9.1 m / 30 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.

MeasureBasking sharkOtodus obliquus
Length referencereported to 12 m / 40 ftestimated to about 9.1 m / 30 ft
Weight referencelarge-animal estimate about 6,000 kg / 13,200 lbNot reliably reconstructed
Bite forceNot meaningfully establishedUnknownNo defensible estimate usedUnknown
TimeTemperate coastal and offshore watersabout 56–45 million years ago
DietZooplanktonLarge fishes and marine vertebrates
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Basking shark is represented by reported to 12 m / 40 ft; Otodus obliquus by estimated to about 9.1 m / 30 ft. The upper length is exceptional; the mass is a rounded comparison estimate. Soft-body dimensions are inferred from teeth and living analogues.

Bite evidence

Basking shark: A comparable maximum-bite study is not available for this filter feeder. Otodus obliquus: No species-specific model 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

Its enormous mouth strains plankton; it is not built for a giant predatory bite. It belonged to the megatooth lineage that later produced megalodon.

04

TRACE THE CLAIMS

Sources and limits.

Basking sharkFlorida MuseumOtodus obliquusPaleobiology DatabaseHow we standardize comparisonsRead the methodology →