This chapter presents an overview of the way in which animals communicate, introducing some of the core concepts. It discusses how social structures of animals relate to their communication systems, and introduce the study species, Blainville's beaked whales, and what is known about them to date. The cost associated with energy consumption can be seen as one of the major concerns of data centers. This cost is sometimes nonlinear with the capacity of those data centers, and it is also associated with a high amount of Carbon emission. With the energy costs increasing, the focus shifts from optimizing data center resource management for pure performance to optimize it for energy efficiency while maintaining the services' performance. Depending on the efficiency of the data center infrastructure, the number of watts that it requires can be from three to thirty times higher than the number of watts needed for computations.