This project will conduct a series of dredge calibration experiments at sea in collaboration with fishing industry collaborators. These experiments will collect data important to allowing data collected in the fisheries monitoring programs to be compared directly to clam survey data collected in other survey programs, including the federal fishery survey program. Additionally, samples will be collected to characterize the carbonate chemistry environment that surfclams inhabit off the coast of New Jersey, and how the clams are responding biologically to that environment.