Frommer's Review
The folks at Rainbow were the first in the area, and in the years since have taken advertising to the level of pollution in Nha Trang, with seemingly every storefront claiming a connection. But whatever your belief is in truth in advertising (or quantity of advertising), these guys are the best in town and you can book just about anywhere. Rainbow also has dive centers throughout Vietnam: on nearby Whale Island, on Phu Quoc Island (south of the Mekong Delta), and on Con Dao Island (east of Saigon).
Note: This information was accurate when it was published, but can change without
notice. Please be sure to confirm all rates and details directly with the companies in question before
planning your trip.