The goal of the NSF funded Macroalgal Digitization Project is to image, database and georeference the macroalgal specimens in 49 herbaria from New England to Florida, to Hawaii and Guam. Data provided through this project portal will allow researchers to determine how macroalgal biodiversity and our aquatic ecosystems have changed over the past 150 years as a result of climate change, bioinvasions, and a wide range of human activity.