Ribbed mussels act as ecosystem engineers protecting shorelines through their settlement pattern and acting as nutrient buffers through active water filtration. However, as climate change continues to alter marine systems, including changes in water temperature and timing of seasonal food availability, ribbed mussels may be impacted. Ribbed mussels may look simple, but under that shell they exhibit a complex interconnected physiological web. The salt marsh, home of the ribbed mussel, exhibits extreme environmental conditions due to tidal fluctuations and seasonal variability. The physiological network of this species can not only withstand these conditions but can allow ribbed mussels to thrive in them. But we do not yet know how the effects of climate change, especially temperature and food availability, will affect physiological and behavioral responses. In this study, larval ribbed mussels were exposed to a range of temperatures and food levels to determine the effects on growth, survival, and developmental timing. The larval stage is expected to be the most vulnerable life stage to external variation in conditions, and early developmental stages can have long-term effects on population dynamics. From our data, we investigate these complex physiological systems to understand their response to multivariable temperature-food conditions. From these data, we aim to model the complex physiological response of the ribbed mussel and project the species outcome in response to continued climate change.