Good question Bruce. The shark’s range apparently extends from the Arctic and Northern Europe down to Georgia (the country). Maybe a horse was thrown overboard from a ship, a la horse latitudes, dropping a nice equine carcass in the shark’s path? Or perhaps the sharks can attack horses crocodile style, as has been proposed for caribou.

But no one really knows much about the sharks’ behavior—it isn’t even known whether they catch live seals, or just eat them when they’ve already died. Hopefully this research will shed some light on these bizarre beasts.