Introduction: Listening in the Ocean -- A review of blue whale studies from HARUphones in the Pacific -- Long-Term Monitoring of Cetaceans Using Autonomous Acoustic Recording Packages -- From Shrimp to Whales: biological applications of passive acoustic monitoring on a remote Pacific coral reef -- Studying the biosonar activities of deep diving odontocetes in Hawaii and other western Pacific locations -- Environmental acoustic recording system (EARS) in the Gulf of Mexico -- Listening to echo-location clicks with PODs -- PALAOA - The Perennial Acoustic Observatory in the Antarctic Ocean: Real-time eavesdropping on the Antarctic underwater soundscape -- Listening for whales at the Station ALOHA Cabled Observatory -- Findings from U.S. Navy hydrophone ranges -- Pinniped Sounds in the Polar Oceans -- Listening in the ocean: new discoveries and insights on marine life from autonomous passive acoustic recorders -- Passive acoustic monitoring in benthic marine crustaceans: a new research frontier -- A multi-platform ultrasonic event recorder for tagging, towing, and stationed monitoring of odontocetes -- Signal Processing.

This title brings to light the discoveries and insights into the lives of many marine species made possible over the last decade by passive acoustic recorders (PAR). Pop-ups, ARF, HARP, EAR, Bprobe, C-POD Atag, and Dtag are the acronyms of some of the many PARs that have changed our understanding of how marine animals live and strive in the ocean. Various types of PARs are used by different investigators in different areas of the world. These recorders have accumulated copious amounts of very important data, unveiling previously unknown information about large marine animals. Temporal, seasonal, and spatial distribution patterns have been uncovered for many marine species. There have been many discoveries, new understandings and insights into how these animals live in and utilize the ocean, and the importance of acoustics in their lives. Listening Within the Ocean summarizes these important discoveries, providing both a valuable resource for researchers and enjoyable reading for non-professionals interested in marine life.