Dear MARMAM readers, On behalf of my coauthors and myself, I am pleased to share a recent publication with you: Soliño L., Kim S-Y., López A., Covelo P., Rydberg S., Costa P.R. and Lage S. 2022. No B-N-Methylamino-L-alanine (BMAA) was detected in stranded cetaceans from Galicia (North-West Spain). Journal of Marine Science and Engineering 10(3), 314. Abstract: The neurotoxin β-N-methylamino-L-alanine (BMAA), a non-proteinogenic amino acid produced by several species of both prokaryotic (cyanobacteria) and eukaryotic (diatoms) microorganisms, has been proposed to be associated with the development of neurodegenerative diseases. At first, BMAA appeared to be ubiquitously present worldwide in various organisms, from aquatic and terrestrial food webs. However, recent studies, using detection methods based on mass spectrometry, instead of fluorescence detection, suggest that the trophic transfer of BMAA is debatable. This study evaluated BMAA in 22 cetaceans of three different species (Phocoena phocoena, n = 8, Delphinus delphis, n = 8, and Tursiops truncatus, n = 6), found stranded in North-West Spain. BMAA analysis of the liver, kidney, or muscle tissues via sensitive liquid chromatography with tandem mass spectrometry did not reveal the presence of this compound or its isomers. The absence recorded in this study highlights the need to better understand the trophic transfer of BMAA and its anatomical distribution in marine mammals. Open access at: https://www.mdpi.com/2077-1312/10/3/314/htm Please don't hesitate to contact me if you have any questions. Kind regards, Alfredo López CESAM-UA