Pacific sleeper shark is about 1.09× longer by these reference values.
Pacific sleeper shark uses a 7 m upper reference, compared with 6.4 m for Greenland shark. Greenland shark's weight reference is about 1.13× heavier.
ON THE SAME SCALE
Human. Bus. Whale.
Pick your reference.
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.
WHAT SETS THEM APART
More than a size contest.
Length and weight
Greenland shark is represented by confirmed to about 6.4 m / 21 ft; Pacific sleeper shark by reported near 7 m / 23 ft. Age and upper mass involve uncertainty; length is better documented. Large values often depend on indirect or incomplete records.
Habitat and diet
Greenland shark: Cold North Atlantic and Arctic waters; fish, carrion and marine mammals. Pacific sleeper shark: Cold North Pacific, often deep; fishes, squid, marine mammals and carrion.
Bite evidence
Greenland shark: TuffShark found no defensible species-level bite-force estimate to display. Pacific sleeper shark: No standardized maximum is available.
Records are not averages
Both species are living, but record-sized individuals are rare. These upper references should not be read as normal adult size.
TRACE THE CLAIMS