Life in the ocean and in freshwater habitats have long been intertwined. Major branches of the tree of life originated in the oceans and colonized fresh waters, often adapting to the new regime and diversifying. Similar exchanges continue to this day. HaloDaSH is an international research collaboration of paleontologists and neontologists who study how biological exchanges between salty and freshwater habitats have transformed the biosphere. Our goal is to stimulate new research on the history of life and present-day stresses to aquatic systems. We will meet for a symposium and workshop in Phoenix Arizona, January 7-8 2022, in conjunction with the Annual Meeting of the Society of Integrative and Comparative Biology.
