Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Invasive Dreissenid mussels, sorted by size, after a benthic quadrat sample has been processed at the USGS Lake Michigan Ecological Research Station (GLSC; Chesterton, Indiana) for the Cladophora project. Photo Credit: Jessica Oswald, USGS - GLSC.
Public Domain.
