Some of the best beaches in the world include Grande Anse Beach, La Digue Island, Rabbit Beach, Grace Bay, Anse Source d'Argent and Cabbage Beach. These are the some of the top beaches due to their scenic views and beautiful landscape surrounding it. Go to http://edition.cnn.com/2013/05/28/travel/100-best-beaches for more.
Southern California! :) Not northern California, that's the number one place of shark attacks in the world. Not Hawaii, I made a super long list of dangerous ocean animals in Hawaiian waters, and there are a lot of bad things there. And definitely not Australia!