Lift flaps and peep through holes to discover amazing creatures in the deep oceans. Dive down with a submersible to discover the mysteries of the ocean. Oceans cover most of our planet, and yet most of the depths remain unexplored. This book takes you deep down to find light-up jellyfish, diving whales, giant squid and whole mountains at the bottom of the sea. Flaps and peep holes will draw young children into this intriguing subject, and instill a love of this essential ecosystem.