*Sirenews No. 5**7*, April 2012, is now available online at http://www.sea2shore.org/newsletters<http://public.sea2shore.org/newsletters>and http://sirenian.org/sirenews/57APR2012.pdf *The current IUCN Sirenian Specialist Group (SSG) will be dissolved and re-established to coincide with the new quadrennial cycle (2013-2016). This edition of the newsletter includes a request from the SSG co-chairs for nominees for SSG membership for the 2013-2016 quadrennial cycle. The form provided in the newsletter should be completed and submitted by 15 May 2012. *** *Sirenews* is the newsletter of the IUCN/SSC Sirenia Specialist Group The IUCN Species Survival Commission (SSC) is a science-based network of volunteer experts working together towards achieving the vision of "A world that values and conserves present levels of biodiversity." The Sirenia Specialist Group is focused on the conservation of manatee and dugong populations around the world. Cynthia Taylor and James Powell, co-editors Sea to Shore Alliance www.sea2shore.org