In this real-time video the wild-caught hoplonemertean larva nicknamed "Alfonse" (Gurjanovella littoralis) catches and eats a copepod nauplius. This is Video 4 from our paper in Invertebrate Biology, final form at https://doi.org/10.1111/ivb.12363, or preprint on bioRxiv (https://www.biorxiv.org/content/10.1101/2021.02.02.429399v1)