the swim club is writing its own chapter. 78-year-old -- >> reporter: libby gerdes berg joined the club on sunday morning. >> reporter: the 78-year-old with his toe in the water in 2012 when he sold his longtime business. >> i said give me one month. i googled how to learn to swim from alcatraz. >> he started working with pedro in the waterworld swim team. >> he is a special case. he inspired so many, including me. >> he lived by the motto of help others. he loves to swim for charitable causes. i felt like i was following michael phelps the way people were stopping levy as he made his way to the boat . >> where are we going? >> alcatraz. >> thank you. >> in about 75 minutes after he took the plunge, levy reached the shore to complete his 100th swim from alcatraz. do you realize what you have done? >> i took a new for from alcatraz. >> it looks like you could do it again. >> it is round-trip. >> he's going to try to beat my record. >> i have 900 to go. >> i am sure he will do it. >>> what an attitude and what spirit . he had a huge cheering session. it was like i was walking around with