Of the six graduating seniors from Shark Tank Racing Squad, each have participated in at least two of the six annual swim marathons: (from left) Charlie Lertlumprasert, Thomas Jefferson High School for Science and Technology; Nora Surbey, W.T. Woodson High School; Moira LeMay, South County High School; Caroline Paris, West Springfield High School; Holly To, West Springfield High School and Ethan Villavicencio, W.T. Woodson High School.