gone fishing

When they were in the middle of the lake, he fell off. He didn't know how to swim. He was going down to bottom of the lake. Then he pushed himself forward. As he was about to reach the surface, he was blocked by the bottom to the boat. He was beginning to lose his breath. He went down to the lake again and came back. This time he made it to the surface. John was scared to death. He thought he was going to die. His neighbors pulled him to the boat. Afterward, he didn't remember much. Because of the drowning, he lost interested in fishing.

Are they correct?

Thank you