KoOlina Marina is the gateway to your West Oahu boat adventure. The western coastline is known for having the clearest water, due to the light offshore winds and lack of nearby streams. We offer a variety of boat tours such as, snorkeling catamarans, sunset sails, swimming with wild dolphins, dinner boats, and more! Join a tour today and experience the magic of the Waianae Coastline on Oahu, Hawaii.