To determine which shark weighed the least, let's look at the weights provided:
- Shark 1: 233.89 pounds
- Shark 2: 233.08 pounds
- Shark 3: 232.98 pounds
- Shark 4: 232.89 pounds
Among these weights, Shark 3, with a weight of 232.98 pounds, is the lightest.
So the answer is Shark 3.