Fittingly, marine park fees now to go the villagers.
Sharks are attracted to the shallow lagoons and steep drop-offs in the area.
Species include bull, nurse and reef sharks, as well as lemon and tiger sharks.
On Aqua Trek Beqa dives, guests stay on a perimeter around the reef where the dive master starts the feed, 15 meters underwater.
"Divers will see at least seven shark species each time," says Mary-Ann Hines, a representative of the program.
Bull shark and tiger shark encounters are the most common.
Aqua Trek Beqa Dive Center, Pacific Harbor, Fiji Islands; +679 345 0324; two-tank Ultimate Shark Encounter dive from $160 per person
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Cocos Island, Costa Rica
In 1994, Jacques Cousteau described the volcanic Cocos Island Marine Park as "the most beautiful island in the world."
Located 300 miles off the Pacific coast of Costa Rica, the island is home to hammerheads and many other types of sharks.
Live-aboard boats are the only way to dive around Cocos, as visitors are banned from overnight stays and the continental coast is too far to commute.
"Diving on a live-aboard allows you to sit back, relax and focus on one thing, being awed by the incredible beauty above and below water," says Shira Katsir of Undersea Hunter.
Undersea Hunter's dive trips include everything from entertainment to diving and camera equipment.
A 10-day trip includes ground transfer from San Jose and all meals.
Undersea Hunter, +506 2228 6613; packages from $5,145 per person
Protea Banks, South Africa
Divers may encounter up to eight different species of sharks in one dive at Protea Banks. During high season, hammerheads and sand tiger sharks can be seen in schools of several hundred.
AfriDive is an advanced dive site and a prime location to see bull and tiger sharks.
"It is an adrenaline-loaded thrill," says Afridive owner Roland Mauz. "Banks is what I call the Himalayas of scuba diving," he says.
AfriDive, Albert Meyer Drive, Shelley Beach, South Africa; 0824 567 885; dives from $135 per person
False Bay, Cape Town, South Africa