Every orca pod has its very own theme song! Musical elements include whistles, clicks, and pops. Singing is the orca way of communicating, navigating, and hunting. This read offers young children the chance to get in tune with the worlds largest dolphin species.Every orca pod has its very own theme song! Musical elements include whistles, clicks, and pops. Singing is the orca way of communicating, navigating, and hunting. This read offers young children the chance to get in tune with the worlds largest dolphin species.