A walrus optimization algorithm (WOA) for cluster head selection to optimize energy-efficiency in UWSNs-based IoT. - Ramasubbareddy Somula; T. Aditya Sai Srinivas 001; Swathi Sambangi; A. Sanjeeva Reddy Gaddam; Yongyun Cho; S. Remya (Frontiers Commun. Networks, 2026)