Complex sentence: The shell of "Haliotis cracherodii cracherodii" Leach, 1814 is also unusual: it has an ovate form, it is imperforate, shows an exserted spire, and has prickly ribs.
Split into simpler sentences: The shell of "Haliotis cracherodii cracherodii" Leach, 1814 is also uncommon. It has an ovate form, it is imperforate, shows an exserted spire, and has prickly ribs.