There are many like :- 1- Keeps the near by area coooool, just like me. 2- Good for tourists. U know, many people get attracted from beaches and all. 3- Awesome for Trade, like India can trade with many eastern and western countries like Japan (east) and Europe (west) . 4- increases economic value of the country. 5- Helps on tidal electricity generation as it is only possible where tides are available. 6- We can get many minerals with the help of the sea.