In this activity, learners discover that as the salinity of water increases, the density increases as well. Learners prove this by attempting to float fresh eggs in saltwater and freshwater. This resource explains the relationship between water density and salinity as well as how this phenomenon relates to water displacement. It also explains how large ships float on water and includes a chart of some famous historical ship sizes. This resource also includes the flood safety tip "Turn Around, Don't Drown."