The U.S. Navy Living Marine Resources (LMR) applied research program is seeking pre-proposals pertaining to five need topics. The FY21 need topics include: 1) ship shock trial acoustic measurement, 2) standardizing auditory evoked potential hearing thresholds with behavioral hearing thresholds, 3) understanding marine mammal hearing and behavioral response to continuously active sonar, 4) relationship between perceived loudness of a signal and signal length, and 5) studying marine mammal behavioral response to SURTASS LFA sonar. Details regarding the need topics mentioned above and what information is required in a pre-proposal can be found at https://www.navfac.navy.mil/lmr/proposals. All pre-proposals should be submitted via email to exwc_lmr_program@navy.mil. Pre-proposals pertaining to these need topics will be accepted until 11:59 PM PST on 12 November 2020. If invited, offerors will be asked to submit a full proposal.