Atlantis Adventures offers submarine tours from three Hawaii locations. The hi-tech vessels offer a unique opportunity for up-close views of sea life, artificial reefs, and sunken shipwrecks. Children must be at least 36 inches tall to ride the submarine. Tours last about one hour and 40 minutes, with 45 minutes spent underwater. Headset narrations are available in English, Japanese, Mandarin, and Korean. The submarines do not have disabled access; passengers must be able to ascend and descend a near-vertical ladder without assistance in order to participate.