Sentence 1: Wes enjoyed snorkeling. 
 Sentence 3: When Wes tried scuba diving he got severe pain in his head 
 Sentence 4:  The head pain was caused by sinus pressure in deep water 
 Sentence 5:  Wes decided to stick to snorkeling in shallow water 
 Option 1: And that was the thing thing he enjoyed and did. 
 Option 2: He thought that he would enjoy scuba diving as well.