Blessed with a year-long tropical climate it's always a good time to visit the Seychelles. Diving and snorkelling reveal the best of the magical underwater world that the Indian Ocean has to offer. Unique granite boulder formations, coral atolls and wrecks are home to the colourful tropical fish, turtles, sharks, many pelagic species and of course, the seasonal gentle giants, the Whale Sharks. Conditions are superb throughout the year, with a comfortable water temperature and visibility often reaching 30 metres. The main inner islands are spectacular forested granite mountains rising from the Seychelles Bank plateau. At the edge of the plateau lie the coral islands such as Denis and Bird, and then scattered further away are the Amirantes islands and atolls including Aldabra. These are best reached by liveaboard from Oct-May when the seas are calmer.