Many people depend on blue crabs from the Chesapeake Bay for their jobs. But overfishing and changes in the blue crabs' habitats have reduced their numbers. Learn how scientists have stepped in to study these blue beauties so that they can keep a healthy crab population. Created in collaboration with the Smithsonian Institution, this Smithsonian Informational Text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step of the engineering design process, from the initial research and brainstorming sessions, through the design and testing stages, to the evaluation and improvement of the outcome. It makes STEAM career connections by providing a glimpse into the lives of real-life Smithsonian employees currently working in STEAM fields. Discover engineering innovations that solve real-world problems with this e-book that touches on all aspects of STEAM: Science, Technology, Engineering, the Arts, and Math!