The Maui Ocean center offers a very relaxed dive in their main tank. We got to swim with about 20 sharks including scalloped hammerheads and a juvenile tiger shark. I never thought I would've gotten into the water with a tiger. We've done this dive twice and there's always something new. On our recent dive, the dive master actually allowed us to touch the rays and the tail of a sleeping white tip. We also got to do a little feeding but the hammerhead got a little too frisky so the dive master decided to stop. All good though. Plus you get to bring friends and family in if you do their shark dive. A great way to spend a few hours in Maui!