Okay, so maybe we're exaggerating a little bit about the “death” part, although there have been documented cases of the Japanese spider crab injuring fishers who tried to net it (so those particular humans had it coming), but we still wouldn't recommend getting all bro-huggy with this twelve-foot monstrosity, because... well damn, just look at this thing. Two, maybe three bites and this kid with the camera would be history.
The male crab's twelve-foot leg span (the females are a bit smaller), combined with a body weight that can reach nearly fifty pounds, makes the spider crab species Macrocheira kaempferi the largest of all the arthropods.
While its bizarre facial features make it look a lot more menacing than the average crab, it's actually fairly docile... unless, as we mentioned earlier, you try to take it home for dinner.
Actually it's the spider crab that's in danger from us, not the other way around, since some folks consider it quite tasty. Fishing has diminished some populations of the species near Japan to such an extent that conservation groups are pushing for more regulations on when and where it can be caught.