----------SPOILER ALERT----------
Take your bamboo pole and put the knife on the tip of it then you can cut the net the corpse in laying on and it will fall down in the water. Then take your fishing pole and reel it in to the shore. Hope this helps. Now if you happen to make it up to the tree house right beside where the corpse was and can figure out what all to do there I'd appreciate some help with that. Thanks!