A trainer is teaching a seal how to balance a ball on its nose. At the start, he gives the seal a fish for approaching the ball, then for nudging at the ball, and finally for holding the ball on its nose. The trainer is using:
the hooking thing is what fisherman's use. in an Aquarium, the people that train these types of animals use a fishing hook or any type of hard string/rope and a hook at the bottom in order to hold an object.
