The Dolphin makes all the fish (including the ones on the peoples hooks) grow to immense size (100 feet to be exact) the people start to scream and scramble even more as the fish were going into a frenzy. Some of the fish were even gobbling up no less than ten people at a time and some were actually bashing cruise ships with their tails as the fish were swimming about. "I think they got what they deserved" the dolphin said to itself as it swam away causing a tsunami to flood the city.
As the city is flooded, people are washed out to sea and are falling for the trap. They are nothing more than living fish flakes for giant fish now.
The dolphin turns around to see his work again and plus see the feeding frenzy as tons of fish come and eat the people washed to sea.
The dolphin could not help but laugh seeing the people get eaten. The fish have won an endless war with humans now.