Baryon - anti-baryon photoproduction off a proton target is being studied in detail at Jefferson Lab with the GlueX Experiment. We observe $p\bar{p}$ and, for the first time, $��\bar��$ photoproduction (with $��\rightarrow ��^- p$, $\bar�� \rightarrow ��^+ \bar{p}$) from thresholds up to $E_�� = 11.4$ GeV. Preliminary spectra from data accumulated during the GlueX Phase-I period are shown. Angular distributions of the photoproduced hyperons indicate more than one production mechanism in the reaction channel $��p \rightarrow ��\bar��p$. A Monte Carlo simulation with four mechanisms, tested through comparison between simulation and experimental data, is presented.

8 pages, 13 figures, MENU 2019 conference proceedings