You'll feel as though you're walking from the seashore down to the bottom of the reef at this aquarium, which focuses on creatures of the Pacific. Vibrant exhibits let you get close to turtles, rays, sharks, and the unusual creatures of the tide pools; allow two hours or so to explore it all. It's not an enormous facility, but it does provide an excellent (though pricey) introduction to the sea life that makes Hawaii special. The center is part of a complex of retail shops and restaurants overlooking the harbor. Enter from Honoapiilani Highway as it curves past Maalaea Harbor. The Ocean Center's gift shop is one of the best on Maui for artsy souvenirs and toys.