SHARK VS SHARK

HybodusvsMegamouth shark

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

ExtinctHybodus hauffianus×LivingMegachasma pelagios
QUICK VERDICT

Megamouth shark is about 2.8× longer by these reference values.

Megamouth shark uses a 7.1 m upper reference, compared with 2.5 m for Hybodus. 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
AHybodusabout 2.5 m / 8.2 ft
BMegamouth sharkreported to about 7.1 m / 23 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.

MeasureHybodusMegamouth shark
Length referenceabout 2.5 m / 8.2 ftreported to about 7.1 m / 23 ft
Weight referenceNot reliably reconstructedreported near 1,215 kg / 2,679 lb
Bite forceNo defensible estimate usedUnknownNot meaningfully establishedUnknown
Timeabout 250–100 million years agoDeep tropical and subtropical oceans
DietFishes and hard-shelled preyKrill and other plankton
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Hybodus is represented by about 2.5 m / 8.2 ft; Megamouth shark by reported to about 7.1 m / 23 ft. The genus spans a long interval and multiple species; this is a comparison reference. Sparse specimens make a true maximum difficult to establish.

Bite evidence

Hybodus: Tooth form suggests diet, not an exact force. Megamouth shark: This filter feeder lacks a comparable maximum-bite study.

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 a shark-line relative, not a member of a living shark order. Known from relatively few encounters, it still carries major uncertainty.

04

TRACE THE CLAIMS

Sources and limits.

HybodusNatural History MuseumMegamouth sharkFlorida MuseumHow we standardize comparisonsRead the methodology →