Chilika lake is about 2 hours drive from Bhubaneshwar. It is the second largest lagoon in the World. You could enjoy local sea food at restaurants on the shore. A boat needs to be hired, would cost between 1400-1800/-.Minimum time of boat ride is 2.5 hrs. At Chilika one could spot Dolphins, the boatman takes you to a spot where they can be spotted,requires patience mostly we get to see only its hump. Then you are taken to the sea mouth where the lake meets Bay of Bengal.The entire ride is pleasant , the serene ride with breeze hitting you is very relaxing. April is not a season to visit if you want to spot birds you could spot few storks, seagulls and many kingfishers though. Make sure you taste the sea food at local restaurants they are very tasty.