Marvelous Marine Below Level Reader Grade 5: Harcourt School Publishers Storytown (Harcourt Leveled Readers: Below Level Grade 5)

Marvelous mammals dwell beneath the ocean's surface. It's said that some of these interesting creatures -- like manatees and sea otters -- have become endangered. Human actions are threatening these members of the large marine ecosystem. What makes these animals special? How are they different from other creatures? Marvelous Marine Mammals answers these questions and more.