Diphyllidea [Diphyllidea]
Description
Diphyllidea is an order of tapeworms that are primarily known to infest sharks and other elasmobranch fish, making them relevant to marine biology. These tapeworms are characterized by their two bothridia (sucker-like structures) without hooks on the scolex, a feature distinguishing them from other orders. They are unique in their life cycle and morphology, adapted to parasitizing a variety of marine predators.