TL;DR: The use of brown alga (Bifurcaria bifurcata) inside the biosynthesis of copper oxide nanoparticles of Proportions 5–45 nm is reported for The 1st time and these nanoparticles have been found to exhibit substantial antibacterial action towards two different strains of bacteria. The complexity with the peer overview system and https://www.directivepublications.org/journal-of-applied-nanoscience/