A redescription of the domestic find of the big sea krait <i>Pseudolaticauda semifasciata</i> (Reinwardt in Schlegel, 1837), with a note on the species composition of sea snakes (Serpentes: Laticaudidae, Hydrophiidae) in Russian and adjacent waters
A single domestic find of the big sea krait <i>Pseudolaticauda semifasciata</i> is redescribed, and all finds of sea snakes in Russian and adjacent waters are listed. Keys for identification of sea snakes of the Sea of Japan are given.