Sado Island is famous for sight seeing, particularly for sea views, sea food, sea sports and sea linked life style. The island seems to a dreamland with local culture and Japanese citizen facilities. On 04 August as a part of my son Coronet’s summer vacation tour, I have got the experiences in ‘banana boat’ riding and sea sports. As the boat has been made with banana shape, it is well known as ‘Banana Boat’ that favorite to children and tourist. Along with getting experiences giving guard to Coronet in sea were my purposes of joining. During enjoyment Coronet, easily become excited! Whenever we were in deep sea by riding ‘banana’ sports boat with pulling ship rope, water was moving with high wave. I was remembering the wave of Tsunami! However, Coronet was so happy, try to prove himself as brave and cheerful with sound and jumping! Nevertheless, I was shocked and worried for accident! I could stop him! I was catching his and mine set belt! At last, I have returned safely. Coronet says, father I want to go again in the sea! I have said ‘NO!’