Scientists put tiny backpacks on crayfish

However, keeping tabs on these four-inch-long freshwater creatures can get a bit sticky. More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results. Breakthroughs, discoveries, and DIY tips sent six days a week. By signing up, you confirm you are 16+, will receive newsletters and promotional content and agree to our Terms of Use and acknowledge the data practices in our Privacy Policy . This back to school season, U.S. Fish and Wildlife Service (FWS) biologists are testing out a backpack of their own.