Impairments of the acoustic channel impose the requirement of improvement in throughput efficiency of the network. Therefore, efficient mechanisms must be proposed to increase throughput while conserving energy at the same time. In this paper, we propose two energy efficient geographic opportunistic routing protocols for underwater wireless sensor networks called improved Distributed Topology Control (iDTC) and Power Adjustment Distributed Topology Control (PADTC). These protocols guarantee the delivery of data by dealing with communication void problem of geographic opportunistic routing. The recovery from void region is performed via depth adjustment and power adjustment of a void node. The protocols are validated via simulations. We compare the protocols with Distributed Topology Control (DTC) and results show that iDTC and PADTC consume less energy and perform minimum displacement in case of void node while maintaining the same throughput.