Direct electrolysis of seawater to produce green hydrogen is a more environmentally friendly process than freshwater electrolysis. The renewable energy sector exhibits tremendous interest in practical seawater electrolysis techniques due to its substantial capacity to mitigate the need for freshwater consumption. With the low catalytic efficiency of the current seawater splitting process and the poor reliability of its operation, the process suffers from severe corrosion caused by chloride ions, as well as anodic competition between oxygen evolution and chlorine oxidation reactions. This review provides an overview of the latest electrocatalyst developments for promoting selectivity and stability in seawater electrolysis.