Conveniently located on the Mauna Lani Resort at Maka'iwa Bay on the beautiful Kohala Coast of the Big Island Hawaii, Mauna Lani Sea Adventures offers a variety of ocean activities at reasonable prices. The best scuba diving and Snorkeling on the Big Island! Beautiful Sunsets and winter whale watching at its best. Located at the Mauna Lani Beach Club and servicing the Kohala Coast for over 25 years. Looking for an ocean adventure?