Fig. 4From: Development of an animal-borne “sonar tag” for quantifying prey availability: test deployments on northern elephant sealsSonar tag acoustic data showing evidence of bottom scattering. a One hour subset of acoustic data associated with translocated seal #4. Strong bottom scattering associated with benthic-type dives is evident as the animal moved toward shore off the Monterey Peninsula (region 1 in Fig. 2). b Zoom in on bottom-associated scatteringBack to article page