Sharks and rays are basal fish with numerous primitive anatomical features similar to those of ancient fish, including skeletons composed of cartilage.
ʃˈɑːɹks ænd ɹˈeɪz ɑːɹ bˈeɪsəl fˈɪʃ wɪð nˈuːmɚɹəs pɹˈɪmᵻtˌɪv ˌænɐtˈɑːmɪkəl fˈiːtʃɚz sˈɪmɪlɚ tə ðoʊz ʌv ˈeɪntʃənt fˈɪʃ, ɪŋklˈuːdɪŋ skˈɛlᵻtənz kəmpˈoʊzd ʌv kˈɑːɹɾɪlɪdʒ.