Dear Colleagues, This year, the 21st annual ACM SIGGRAPH / Eurographics Symposium on Computer Animation (SCA), the premier forum for innovations in computer animation and physics-based simulation, will be a hybrid face-to-face and online event. The conference is hosted at Durham University in the UK, September 13-15, with live online broadcast. You are welcome to physically join the conference and participate online. We would like to bring your attention to our call for papers. We consider animation and simulation in a broad sense defined as computation dealing with time-varying phenomena, and invite you to submit high-quality work. Accepted full papers will be published in the journal Computer Graphics Forum, a leading journal for in-depth technical articles on computer graphics. Accepted short papers will be published in the conference proceedings indexed by ACM and Eurographics. The conference topics include: *) 2D, 3D, and N-D animation systems, *) Autonomous agents, *) Clothing animation and simulation, *) Expressive motion / communication, *) Generative and morphable models, *) 3D and 4D motion modeling, *) Learned character control, *) Facial animation, *) Feature learning of motions, faces, body shapes, and hand gestures, *) Group and crowd behavior, *) Interactive computer graphics, *) Intuitive interfaces for creating and editing animations, *) Mathematical foundations of animation, *) Methods of control and artistic direction of simulations, *) Machine learning techniques for animation, *) Modeling and simulation of natural phenomena, *) Nature in motion (natural phenomena, plants, clouds, etc.), *) New time-based art forms on the computer, *) Novel time-varying phenomena, *) Perceptual metrics and foundations of animation, *) Physical realism / measuring the real world for animation, *) Physical simulation, *) Fluid animation and simulation, *) Planning / learning / optimization for animation, *) Real-time and interactive methods, *) Camera control methods for computer animation, *) Sound and speech for animation, as well as related problems in robotics, game development, human-computer interaction, simulation, visualization, computer vision, and others. Important dates: *) Full-paper/short-paper deadline: May 3, 2022, 10pm GMT; *) Full-paper/short-paper notification: June 28, 2022; Full papers are permitted to be up to 12 pages in length, short papers up to 4 pages in length, including acknowledgements, references, etc. Both full and short papers will be given oral presentations at the conference. All submissions will be reviewed on the basis of technical quality, novelty, significance, and clarity. Please find further information and the LaTeX template on the conference website http://computeranimation.org/. The review process will be double-blind and an anonymous version of your manuscript should be submitted as a single PDF file. Supplemental material such as additional descriptions or videos may also be submitted electronically and will be made available to reviewers (max. 20MB). We will open the submission system on our conference website in the upcoming weeks. SCA has a strict two-cycle review process. That means, papers will be rejected after conditional acceptance if they fail to incorporate the required changes. By submitting your article to an ACM Publication, you are hereby acknowledging that you and your co-authors are subject to all ACM Publications Policies, including ACM's new Publications Policy on Research Involving Human Participants and Subjects. Alleged violations of this policy or any ACM Publications Policy will be investigated by ACM and may result in a full retraction of your paper, in addition to other potential penalties, as per ACM Publications Policy. Please ensure that you and your co-authors obtain an ORCID ID, so you can complete the publishing process for your accepted paper. ACM has been involved in ORCID from the start and we have recently made a commitment to collect ORCID IDs from all of our published authors. The collection process has started and will roll out as a requirement throughout 2022. We are committed to improve author discoverability, ensure proper attribution and contribute to ongoing community efforts around name normalization; your ORCID ID will help in these efforts. Finally, to meet the cost of the conference, one full registration is required for each accepted paper. Please do not hesitate to contact us if you have any questions. We look forward to receiving your submissions, and we hope to see you all in Durham or in cyberspace! Hubert P. H. Shum, Julien Pettre, Dominik L. Michels, and Sören Pirk