The Shimoda Underwater Aquarium is located near the tip of Izu peninsula, with several sandy beaches along the coasts nearby. Through survey activities beginning in 1991 we now know that Loggerhead turtles spawn almost every year, a fact gradually coming to be recognized by local residents. However, because of this, we are also beginning to get glimpses of problems. There is a sense that local aquariums have a large role to play.