Enjoy one of the most popular sites to view Hawaiian marine life. See hundreds of species of tropical fish, coral reef gardens and more via the high-tech Atlantis Submarine. Take a scenic boat ride from the Kailua-Kona pier. Then, in crystal-clear waters, descend down more than 100 feet below the surface to explore 25 acres of coral reef gardens, formed on lava that flowed into the ocean 18,000 years ago.