Beach bag by Matthew Modoono December 15, 2017 Share Facebook LinkedIn Twitter 12/14/17 – NAHANT, MA. – Sarah Jane, analyzes beach gravel at the Marine Science Center on Dec. 14, 2017. Photo by Matthew Modoono/Northeastern University Research assistant Sarah Jane Chang analyzes beach gravel at the Marine Science Center on Thursday afternoon. She uses large sieves to sort samples of beach sand by grain size as part of a study to understand how seasonally-varying coastal dynamics impact local shorelines. Photo by Matthew Modoono/Northeastern University