Bees do not normally inhabit such places as decomposing carcasses. This carcass apparently dehydrated very quickly, providing in no time flat a hospitable place for bees to live and produce honey. The story does not represent Samson’s discovery as an every-day occurrence.
1 The point in this is that the narrator views this as bearing the signature of God. These bees are another agent of the Lord, in the nitty-gritty of life. God is mysteriously performing wonders, for his own purposes.2
8 After some days he returned to take her. And he turned aside to see the carcass of the lion, and behold, there was a swarm of bees in the body of the lion, and honey.