If they swim too slowly, they stall and sink just like an aircraft, and this in spite of a buoyancy - inducing cache of oil stored in a liver so big that it may account for one quarter of the shark’s total weight!
Kui nad ujuvad liiga aeglaselt, vajuvad nad allapoole nagu lennuk, mille mootor õhus seiskub, ja seda vaatamata maksas leiduvale ujuvust soodustavale õlile, mida on nii palju, et see moodustab hai kaalust peaaegu neljandiku.