Molicola horridus
Molicola horridus is a species of tapeworm. The adult worm is found in the spiral valve in the lower part of the intestine of the blue shark. The larvae are found infesting the livers and muscles of ray-finned fishes such as the ocean sunfish, and the spot-fin porcupinefish.
This tapeworm has been found parasitising sharks from France, the Mediterranean region, Brazil, Canada, India, Japan and New Zealand.