The actual conditions of recreational use of the coastal area on the Pacific coast of the Atsumi peninsula were investigated by the field and questionnaire surveys. Inquiry of users' consciousness of tsunami disaster was carried out at the same time. Records and experiences in the past earthquakes and present tsunami warning systems designed by the local governments were also investigated. Through the investigations, weakness in tsunami disaster prevention in this area was highlighted. Thousand of surfers might be isolated by an earthquake and endangered by a tsunami in the critical conditions.