Abstract
In Chapter 4, we saw that sound propagates extremely efficiently through the sea and we explored some of the consequences of this for cetaceans. We showed that the dominant sensory modality for cetaceans is acoustic and that most cetaceans are highly vocal animals. This means that acoustic methods can often be very effective means for studying cetaceans. Studies of acoustic behaviour require a variety of specialised acoustic techniques. We will briefly review some of these here, highlighting some of the particular problems of working on cetacean acoustics and giving examples of solutions. In addition, largely because sound travels so well underwater, acoustic methods are often the most effective and efficient means of addressing questions about cetaceans which are not primarily acoustic in nature: assessing population distribution, abundance and movements for example.
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