As news of marine creatures dying from plastic waste and ocean pollution becomes increasingly frequent, this book tells the story of marine life suffering from such ocean garbage.

Various characters, including the hungry Yellow Stingray and his friend Lionfish as well as the Whale Shark and a baby sea turtle trapped in plastic, vividly convey the polluted state of the ocean. The author becomes aware of the seriousness of ecological destruction caused by plastic waste as she observes the polluted ocean, and through this book, she shows her concern for the future brought about by environmental pollution. She earnestly hopes for the day when the ocean regains its purity and marine creatures no longer suffer, and wishes for a future where the blue sea no longer hurts.