How deep is the ocean?rnWhich fish can blow itself up like a balloon?rnHow do dolphins use sound to hunt?rnThese and hundreds of other questions about life in the oceans are answered in this fascinating book. Simple, easy-to-read text and lively, detailed illustrations introduce the basic concepts of sea life to young readers.rnrnÔùÅ Seas and Oceans ÔùÅ Underwater Life ÔùÅ Who Eats Who…