He wasn't necessarily blown apart by the explosion, although that would have given the seed the highest chance of surviving (instead of slowly disintegrating in

He wasn't necessarily blown apart by the explosion, although that would have given the seed the highest chance of surviving (instead of slowly disintegrating inside the stomach). The shockwave inside a cave can be a pretty deadly thing even if you are behind cover. He could even have been killed by something as minute as a ruptured blood vessel in the brain.