When you come to Okinawa, don't miss the chance to experience snorkeling or diving in the beautiful sea of Okinawa! This even comes with an optional 120-minute SUP experience to enjoy two unique Okinawan sea experiences at the same time! The "Blue Cave" is a cave formed through the erosion of rock by seawater. The seawater inside the cave shines with a mysterious blue light due to the refraction of sunlight, hence giving rise to the name "Blue Cave". Not only are the fees transparent and the course is available in Chinese, but only professional certified instructors are hired. This is sure to help you experience one of the best snorkeling and diving trips ever!