该文件描述了水下通信的使能和驱动技术，例如声学通信、光学通信、甚低频(VLF)/极低频(ELF)通信和磁融合通信(MFC)。该文件还强调: -不同通信技术的技术概述；-不同通信技术的特点；-不同通信技术的趋势；-每种通信技术的应用；-每种通信技术的优点和挑战。

This document describes the enabling and driving technologies of underwater communication such as acoustic communication, optical communication, Very Low Frequency (VLF)/Extremely Low Frequency (ELF) communication, and Magnetic Fusion Communication (MFC). This document also highlights:

– technical overview of different communication technologies;
– characteristics of different communication technologies;
– trends of different communication technologies;
– applications of each communication technology;
– benefits and challenges of each communication technology.