Just visited Besant Nagar beach yesterday and I could see some difference in the way the wave was hitting the shore. Normally the shore will be slanted towards the sea. The waves will hit the shore and then go back as quickly as it came. But I could see the bed had become flatter and the water stagnates. Even if there is no wave there is some amount of water that is present like a lake. This was something weird has I have never seen it in Marina or in Elliots. Kovalam has a flatter bed compared to the city beaches but it was really weird to see the flat bed yesterday.