SHARK VS SHARK

Common threshervsFrilled shark

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

LivingAlopias vulpinus×LivingChlamydoselachus anguineus
QUICK VERDICT

Common thresher is about 3.8× longer by these reference values.

Common thresher uses a 7.6 m upper reference, compared with 2 m for Frilled shark. Common thresher's weight reference is about 23× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ACommon thresherreported to 7.6 m / 24.9 ft
BFrilled sharkabout 2 m / 6.6 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.

MeasureCommon thresherFrilled shark
Length referencereported to 7.6 m / 24.9 ftabout 2 m / 6.6 ft
Weight referencerecorded over 340 kg / 750 lblarge-adult reference about 15 kg / 33 lb
Bite forceNo dependable maximum foundUnknownNo dependable maximum foundUnknown
HabitatTemperate and tropical open watersDeep continental slopes
DietSchooling fishes and squidSquid, fishes and small sharks
03

WHAT THE DATA CAN SAY

Size is not the whole animal.

Length and weight

Common thresher is represented by reported to 7.6 m / 24.9 ft; Frilled shark by about 2 m / 6.6 ft. Length comparisons can exaggerate body bulk because the tail is exceptionally long. Deepwater records remain limited.

Bite evidence

Common thresher: Its hunting performance cannot be reduced to jaw force. Frilled shark: No standardized maximum is available.

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

Much of its length is tail, which it uses to stun prey. Its body plan looks ancient, but living frilled sharks are modern species—not unchanged fossils.

04

TRACE THE CLAIMS

Sources and limits.

Common thresherFlorida MuseumFrilled sharkFlorida MuseumHow we standardize comparisonsRead the methodology →