Well, they say it's no big deal to swim with the whale sharks at Ningaloo Reef.

Here, north of Perth in Western Australia, you can explore the underwater world of colorful reefs and a variety of fish and aquatic mammals. And yes, this is the place to dive and swim with the world's largest fish, the whale shark.

They're not only big but, in their own way, friendly. And they're part of the natural attractions along the Western Australia coast.

• Ningaloo Reef: Where to Swim with the Sharks
• Shark Bay: Dugongs, Dolphins, Stromatolites
• Rottnest Island: Underwater Attractions
• The Friendly Dolphins of Monkey Mia
• Go on a Camel Trek on Cable Beach

Photo: Swimming with a whale shark © Australian Tourist Commission