As part of the Ocean Acidification Day of Action, this virtual event focuses on the effects of ocean acidification on crustaceans. Amalia and Phil will first provide a brief overview of ocean acidification before discussing how their focal species respond to a changing environment. Phil will focus on the effects of acidification on the swimming behavior of larval stone crabs and spiny lobsters. Amalia will then discuss her work exploring the effects of acidification on the physiology and immune response in juvenile American lobsters. The speakers will then end the presentation with some suggestions for how audience members can get involved in climate action and how even small changes can make a difference.