Blue shark vs Otodus obliquus: Size, Weight & Bite Force

QUICK VERDICT

Otodus obliquus is about 2.4× longer by these reference values.

Otodus obliquus uses a 9.1 m upper reference, compared with 3.8 m for Blue shark. A clean mass ratio is not shown because at least one weight is not reliably reconstructed.

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS

ABlue sharkabout 3.8 m / 12.5 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.

THE NUMBERS

Side by side.

MeasureBlue sharkOtodus obliquus

Length referenceabout 3.8 m / 12.5 ftestimated to about 9.1 m / 30 ft

Weight referencereported near 206 kg / 454 lbNot reliably reconstructed

Bite forceNo dependable maximum foundUnknownNo defensible estimate usedUnknown

TimeOpen temperate and tropical oceansabout 56–45 million years ago

DietSmall fishes and squidLarge fishes and marine vertebrates

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Blue shark is represented by about 3.8 m / 12.5 ft; Otodus obliquus by estimated to about 9.1 m / 30 ft. Upper records are uncommon; most adults are lighter. Soft-body dimensions are inferred from teeth and living analogues.

Bite evidence

Blue shark: No comparable maximum is used. 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 long fins and slender build matter more than raw bulk. It belonged to the megatooth lineage that later produced megalodon.

TRACE THE CLAIMS

Sources and limits.

Blue sharkFlorida Museum ↗Otodus obliquusPaleobiology Database ↗How we standardize comparisonsRead the methodology →