Duration: 1.5 hours
Like mammals, birds, reptiles, amphibians, and other fishes, sharks (and skates and rays) are vertebrates belonging to the phylum Chordata and the subphylum Vertebrata. Sharks, skates, and rays are separated from their vertebrate cousins into the class Chondrichthyes - the "cartilaginous fishes." With this course, you will learn the main differences between sharks and rays (cartilaginous fish), their key features and general concepts about cartilaginous fish biology.
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