Mysterious sharks! (The Forest)

For a long time already playing in the forest, in the early versions were sharks near the yacht mainly closer to the coast, after they were removed far into the water, now in versions 0.62-0.63't see any alive, for a maximum of three dead on the beach, and near small Islands in the water at the bottom also of the same three dead bodies, seen one alive and in the open, when floated on a raft. all, who will explain what is happening, I all the length and breadth explode, do not have them.