Complex sentence: The giant conch is preyed upon by invertebrates, such as octopi, and also by vertebrates, including rays (genera and species of cartilaginous fish in the family Myliobatidae), triggerﬁsh (family Balistidae), and snappers (perciform fish in the family Lutjanidae).
Split into simpler sentences: The giant conch is preyed upon by invertebrates, such as octopi. It is also preyed upon by vertebrates, including rays (genera and species of cartilaginous fish in the family Myliobatidae), triggerﬁsh (family Balistidae), and snappers (perciform fish in the family Lutjanidae).