Then they determined the sounds were coming from the whales. According to Fristrup and Harbison sperm whales eyes afford good vision and sensitivity to light. From the stormy surface to the eternal darkness of the abyss, several generations of these deep-sea divers encounter men and their "toys": This is the deep scattering layer, the zooplankton and lanternfish. Benthic dive types were recorded in some proportion by six of the recovered tags 0. Thus, information related to how sperm whale diving behavior changes over time and space remains limited, and there has not been a rigorous characterization of the dominant dive types or the proportion of time and effort allocated to each.
Rudimentary teeth are also present in the upper jaw, but these rarely emerge into the mouth.
Each click also travels backwards inside the head, and is reflected forwards again by an airsac in front of the skull. Each organism has a different acoustic signature, and she can often figure out what sort of creature the waves are bouncing off of. Combining the acoustic work with the stereo photography we can measure the actual size of a whale in real time. Benthic dives were recorded by six of the 10 recovered tags. Females remain at lower latitudes.