if we believe the story behind we find that Ramsetu was made by two brothers of the Ram's Army know as Nal and Neil who were cursed by the Rishis that what ever they will touch and through in water will start floating.Naal and Neel as children were cursed by a Rishi(sage) for throwing the belongings of the Rishis into the river, the curse was that whatever they threw in the water would never sink, so the Rishis could recover their belongings. and to best of my knowledge there is no record that such curse was ever withdrawn. and if the story is true and there is real potential in rish,s curse the materials used for making should have been floating by now also. but the so called Ramsethu is underwater in totally submerged condition . so called crusaders for Hindu sentiments and faith, should explain to the nation and also to millions of Hindus. because Hinduism also give prime importance to scientific enquiry and reason before believing anything..