“ Our best estimate now is that acceleration caused by the elastic recoil of blubber that is compressed and stretched with each tail stroke may save up to 20% of the cost of locomotion during extended periods of continuous swimming. ”
પરંતુ, તાજેતરમાં જ તેઓને ખબર પડી છે કે એનું અડધું શરીર કૉલેજન તંતુઓથી બનેલું છે.