In this issue of Swimming World, read about 2021's World Swimmers of the Year, Caeleb Dressel and Emma McKeon. Also featured are 2021's swimmers of the year from the Pacific Rim, the USA, Europe, and Africa; The Top 10 performances of 2021; How Siobhan Haughey became a Hong Kong hero; The Aquatots Murder Case: The Kathy Tongay Story (Part 3); The best way to eat hard when you train hard; Coaching in a Changing Environment (Part 2); Maximizing Swimming Velocity (Part 6)- The Push Phase; Special Sets with Junior National Team member and NOVA of Virginia swimmer Zoe Dixon; Q&A with Elmbrook Swim Club's coach Brent Boock; How They Train with Elmbrook's Campbell Stoll; Dryside training to help you finish strong; Up and Comer Thomas Heilman of Cavalier Aquatics; The 2021 Holiday Gift Guide; and much more!