Atlantis Submarines wants to celebrate its 20th anniversary with kamaaina. Through Dec. 31, 2008, isle residents can save more than 60 percent on its sub tours off Waikiki, Lahaina and Kona.

Guests travel to depths of 125 feet aboard the eco-friendly battery-powered passenger submarine equipped with large portals to the underwater world.

Hawaii residents can also save 20 percent off the regular price for Atlantis Cruises' sunset dinner cruises aboard Navatek 1, and more than 40 percent for a submarine-and-dinner cruise package through the end of the year.

Atlantis Cruises depart at 5:15 p.m. daily from Aloha Tower Marketplace for a two-hour sunset cruise with entertainment and views of Waikiki Beach, Diamond Head and the setting sun.

Sub tour rates start at $16.16 for keiki and $37.70 for adults. The sunset buffet cruise starts at $46.31 per child and $68.92 per adult, depending on meal choice. The sub-and-sunset cruise starts at $101.24 per adult. Prices include taxes and fees. Combo sub-and-dinner cruise tickets must be used within three days of the respective tours.

Proof of residency must be presented. Call toll-free at (800) 548-6262 or visit www.atlantissubmarines.com.