Recently I had visited CST and Gateway of India to show some great things of Mumbai to my cousin.
He was happy to see the Arabean sea and The Taj. Location was too much crowded. Still it was okey for any Indian to enjoy the atmosphere. I noticed to shabby things in sea. Location just infront of Taj. Crowd use to eat stuff and throw the waste in sea. Have a look at below pic :
another one with boats and front view