Together-Immediately Defeating Erosion Act of 2005 - Directs the Secretary of Commerce, acting through the National Oceanic and Atmospheric Administration, to use authorized funds to: (1) collect data relating to the Louisiana coastal area regarding environmental restoration, resource protection, and protection and recovery of fisheries; (2) carry out a restoration project; or (3) enter into an agreement with another federal agency to carry out a conservation, protection, or restoration project in the area.
Directs the Secretary of the Interior, acting through the Geological Survey, to use authorized funds to: (1) collect biological, ecological, environmental, geological, and geographical data relating to the area; (2) monitor and analyze the data collected; or (3) enter into a project agreement with another federal agency.