 Smaller spinner sharks may be preyed upon by larger sharks.Known parasites of the spinner shark include the copepods "Kroyeria deetsi", "Nemesis pilosus", and "N. atlantica", which infest the shark's gills, "Alebion carchariae", which infests the skin, "Nesippus orientalis", which infests the mouth and gill arches, and "Perissopus dentatus", which infests the nares and the rear margins of the fins.Spinner sharks feed primarily on small bony fish, including tenpounders, sardines, herring, anchovies, sea catfish, lizardfish, mullets, bluefish, tunas, bonito, croakers, jacks, mojarras, and tongue-soles.