Sea-Trek VietNam implements the service: “WALKING UNDERWATER” in which you can experience the wonders of many fish species setting against the beautiful luscious colorful corals in Cham Island, a world Biosphere Reserve recognized by UNESCO . This is an activity for guest from 8-80 years old. Non swimming and non diving are wellcome, those who do not want to be in the cramped diving suit, but want to experiment with the discovery of the ocean.