I Fought the Law

Why is it I always feel sheepish about dumping clam or quahog shells into the ocean?
I always wait until the end of the day or even nighttime before venturing down to the beach for this covert operation. 
It feels like illegal dumping or something shady like that. Like I might get caught.
"Oh! Look at her! Dumping those shells BACK INTO THE OCEAN! Who does she think she is anyway?"
I guess dumping anything into the water just feel like littering. 

song: I Fought the Law • artist: The Clash