Entanglement report data are available at 
https://oceanview.pfeg.noaa.gov/whale_indices/map.
and
Saez, L., Lawson, D., & DeAngelis, M. (2021). Large whale entanglements off the U.S. West Coast, from 1982-2017. 
NOAA Technical Memorandum NMFS-OPR-63A. 
Retrieved from: https://media.fisheries.noaa.gov/2021-03/tm-opr-63a-final-031921.pdf?VersionId=null)