About Us

Our main business is operating snorkeling tours and trips around Koh Samui, with destinations to Koh Tao & Koh Nang Yuan, such as the beautiful treasure Angthong National Marine Park.

Our Story

Grand Sea Discovery Co., Ltd. is a Koh Samui based tour business that has been established since 1992. We operate speed boat tours and special charters with routes from Koh Samui to the nearby islands.

Our experienced staff and guides are 100% committed to all our guests enjoying their precious holiday time with us. So climb aboard with Grand Sea and discover exciting, sensual , tranquil and beautiful tour destinations.

The beautiful island of Koh Samui lies in the waters of the Gulf of Thailand and attracts visitors all year round. There are plenty of beaches, restaurants, bars and shops to explore as well as some more authentic Thai experiences with trips to the waterfalls and elephant trekking.