Scientists stumbled onto toothy deep-sea "top predator," and named it after elite sumo wrestlers A sunny winter day in 2016 found marine biologist Yoshihiro Fujiwara anchored off the coast of central Japan, measuring pudgy cusk eels, when a hubbub suddenly erupted aboard ship. The crew of the Shonan Maru had just landed a big, bizarre-looking fish. "Wow! We got a coelacanth!" they joked as they hauled up a specimen so large it evoked the legendary "living fossil" species found only in Africa and Indonesia. A photo provided by the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) shows a specimen of the newly-discovered yokozuna slickhead deep-sea fish.