The U.S. Geological Survey plans to award a non-competitive, firm fixed-price purchase order to InnovaSea Marine Systems Canada Inc. for 100 acoustic transmitters, with delivery required 8 weeks after receipt of order. The transmitters are essential for ongoing fish movement and population research in the Great Lakes basin, where Innovasea has been the established standard for over three decades. Using the same manufacturer ensures data continuity, study comparability, and access to manufacturer-supported analytical services, avoiding significant cost and scientific risk. This notice is for informational purposes only and is not a request for competitive proposals, though all responsible sources may submit a bid. No budget amount or performance location is specified in the description.