Guest Editorial: Special Collection of Papers Arising From UComms14

The special issue showcases selected papers arising out of the Underwater Communications and Networking Conference held in Sestri Levante, Italy, September 3–5, 2014 (UComms14), second in a series of focused meetings intended to bring the best in the field together to present, discuss, and review the state of the art. Major topics span from physical-layer issues to higher layer considerations such as adaptive power strategies and scheduling to optimize channel throughput, clock synchronisation, and network simulation using physical-layer replay.