After a tsunami, you find an axe on the ground next to some fins on the beach. The tsunami was pretty violent, and it looks like this axe got blown into some fish and cut off their fins and now those things are just on the ground by the beach.
Walking down the beach a bit more, you also find a hammer (はま). Gosh, looks like the tsunami hit a workshop or a hardware store or something. First the axe, now a hammer.