SHARK VS SHARK

Blue sharkvsBull shark

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

LivingPrionace glauca×LivingCarcharhinus leucas
QUICK VERDICT

Bull shark is about 1.05× longer by these reference values.

These animals are effectively close in maximum-length terms, so measurement uncertainty can matter more than the apparent difference. Bull shark's weight reference is about 1.54× heavier.

01

ON THE SAME SCALE

Human. Bus. Whale.
Pick your reference.

RELATIVE LENGTH · 0–24 METERS
ABlue sharkabout 3.8 m / 12.5 ft
BBull sharkreported to 4 m / 13 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.

MeasureBlue sharkBull shark
Length referenceabout 3.8 m / 12.5 ftreported to 4 m / 13 ft
Weight referencereported near 206 kg / 454 lbreported to 316.5 kg / 698 lb
Bite forceNo dependable maximum foundUnknown170–5,914 N across studied sizes and bite pointsModeled
HabitatOpen temperate and tropical oceansCoasts, estuaries and freshwater
DietSmall fishes and squidFish, rays, turtles and other sharks
03

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; Bull shark by reported to 4 m / 13 ft. Upper records are uncommon; most adults are lighter. The 4 m figure is a reported maximum; typical mature animals are smaller.

Bite evidence

Blue shark: No comparable maximum is used. Bull shark: The upper value is a theoretical posterior bite for the largest specimen in a 73–285 cm study series—not a universal adult bite.

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

Its long fins and slender build matter more than raw bulk. Its freshwater range is exceptional among large coastal sharks.

04

TRACE THE CLAIMS

Sources and limits.

Blue sharkFlorida MuseumBull sharkHabegger et al. (2012) + Florida MuseumHow we standardize comparisonsRead the methodology →