Actually they do not allow unskilled divers to go in deep sea without a guide so if you wish to it go to a good beach with facilities of rental service and guided experience. Incidentally, these facilities are available in India also at almost all beaches at Goa, Kerala and Lakshadweep. As much I know it's lot of fun and safe in Indian waters.
Then I can do it going there directly like that. That's bad. What do you mean by rental service and guided experience. Is it kind of someone will guide me for the same. I wonder if I went for holiday on this places and can experience underwater at least once, even if it is not that deep inside sea. Lol