"Aqua Wave loves everything about dolphins: the way they swim and twirl, dance and dive. And more than anything she would love to ride one in the annual Trident City Dolphin Dash. But her older sister, Shira, is concerned Aqua will fall off and hurt herself--just like Shira once did--and she won't giver her permission. Will Aqua's wish come true or will Shira's worrying keep her from her deep-sea dreams?"-- Front jacket flap.