The Florida Department of Environmental Protection (DEP) is developing a new transparency standard for marine waters that will protect the seagrass species found throughout the state. The current standard does not sufficiently protect seagrasses, and the new standard will help DEP identify waters in which transparency is too low for healthy seagrass beds. DEP and IAN convened a workshop of experts to determine what factors affect light in seagrass beds, and what transparency criteria have already been established for individual systems. The resulting newsletter summarizes that workshop and discusses how DEP will use this knowledge to set criteria for seagrasses in Florida.