Across 8 geographical regions and in 86 locations, according to Current Issues in Tourism, there are 376 ecotour shark operations globally. North America and the Greater Caribbean ranking in the top 3 locations for highest operations. The Bahamas alone contains over 70% of the shark tourism in the Caribbean (thank you Stuart Cove's).
The next comparable country is the Maldives, which generated around $70USD million in 2007 from shark tourism (around 30% of the country's GDP!). Both of these countries banned shark finning in 2010 and 2011 (The Bahamas also banned long-lining).
Many countries can benefit from shark tourism, if it is done properly, sustainable and responsibly. As a recreational resource alone, it could generate much needed money in many Small Island Developing States (SIDS).
The money to be made in shark tourism is so astronomical, a single reef shark's life can be valued at $73USD per day! Sadly, many countries find the one-time value of a $50 bowl of shark fin soup is worth more than a life. Over the average reef shark's 50-year life cycle, one could generate as much as $200 000USD, when people are smart enough to profit off it and work with governments to use sustainable practices.
Sharks are worth more alive than dead, but the ecological importance of them has no price tag. Sharks maintain the balance of the underwater ecosystem and loosing any more numbers will have devastating ramifications.
On a side note, do a google image search for Shark Finning - the fact that Whale Sharks come up is reason enough to get anyone to sign the shark petition!