SHARK VS SHARK

Megamouth sharkvsShortfin mako

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

LivingMegachasma pelagios×LivingIsurus oxyrinchus
QUICK VERDICT

Megamouth shark is about 1.60× longer by these reference values.

Megamouth shark uses a 7.1 m upper reference, compared with 4.45 m for Shortfin mako. Megamouth shark's weight reference is about 2.1× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
AMegamouth sharkreported to about 7.1 m / 23 ft
BShortfin makoreported to about 4.45 m / 14.6 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.

MeasureMegamouth sharkShortfin mako
Length referencereported to about 7.1 m / 23 ftreported to about 4.45 m / 14.6 ft
Weight referencereported near 1,215 kg / 2,679 lbrecorded to about 570 kg / 1,257 lb
Bite forceNot meaningfully establishedUnknownNo dependable maximum foundUnknown
HabitatDeep tropical and subtropical oceansOpen tropical and temperate oceans
DietKrill and other planktonFast fishes, squid and other sharks
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Megamouth shark is represented by reported to about 7.1 m / 23 ft; Shortfin mako by reported to about 4.45 m / 14.6 ft. Sparse specimens make a true maximum difficult to establish. Record length and mass do not necessarily describe the same individual.

Bite evidence

Megamouth shark: This filter feeder lacks a comparable maximum-bite study. Shortfin mako: No directly comparable maximum bite-force estimate is used.

Living versus extinct

Both species are living, but record-sized individuals are rare. These upper references should not be read as normal adult size.

Ecology changes the matchup

Known from relatively few encounters, it still carries major uncertainty. Speed is its signature; the biggest animals are unusual and hard to verify.

04

TRACE THE CLAIMS

Sources and limits.

Megamouth sharkFlorida MuseumShortfin makoFlorida MuseumHow we standardize comparisonsRead the methodology →