This paper introduces SEAD (Scalable Energy-efficient Asynchronous Dissemination), a protocol designed to minimize energy consumption in wireless sensor networks for data dissemination to mobile sinks. SEAD constructs and maintains a dissemination tree (d-tree) that optimizes energy usage by considering node distances and packet traffic rates. Mobile sinks can move without reporting their locations to the tree, while still receiving successful data updates. The protocol is evaluated through simulations, showing that SEAD consumes less energy compared to other approaches like directed diffusion, TTDD, and mobile ad hoc multicast. The evaluation also demonstrates a trade-off between energy consumption and end-to-end delay, with SEAD favoring energy savings over slightly increased delay. The paper discusses the protocol's design, implementation, and performance, highlighting its effectiveness in managing mobile sinks and maintaining tree connectivity.This paper introduces SEAD (Scalable Energy-efficient Asynchronous Dissemination), a protocol designed to minimize energy consumption in wireless sensor networks for data dissemination to mobile sinks. SEAD constructs and maintains a dissemination tree (d-tree) that optimizes energy usage by considering node distances and packet traffic rates. Mobile sinks can move without reporting their locations to the tree, while still receiving successful data updates. The protocol is evaluated through simulations, showing that SEAD consumes less energy compared to other approaches like directed diffusion, TTDD, and mobile ad hoc multicast. The evaluation also demonstrates a trade-off between energy consumption and end-to-end delay, with SEAD favoring energy savings over slightly increased delay. The paper discusses the protocol's design, implementation, and performance, highlighting its effectiveness in managing mobile sinks and maintaining tree connectivity.