Umi Zatō

Umi Zatō's attestation in the supplied materials is limited to its appearance as an item in illustrated yōkai catalogues. The primary source named is Toriyama Sekien's Gazu Hyakki Yagyō (the first volume of his 1776 e-hon tetralogy), and the figure also appears in Hyakki Yagyō emakimono such as the Matsui Library's Hyakki Yagyō Emaki. The sources supplied do not record any independent origin myth, narrative tradition, or oral lore for Umi Zatō beyond these pictorial inclusions; thus there is no known folkloric origin story or mythic genealogy provided in the available material (Gazu Hyakki Yagyō; Hyakki Yagyō Emaki references).

The supplied sources identify Umi Zatō by its appearance in Sekien's Gazu Hyakki Yagyō and in Hyakki Yagyō emakimono (e.g., the Matsui Library emaki) but do not supply a textual descriptive account of its physical features. Visual information about Umi Zatō is therefore limited to the imagery in those plates: it is known from the illustration as an individuated yōkai entry in Sekien's visual lexicon. The provided materials do not include plate numbers, transcriptions of Sekien's caption for this entity, nor an extended pictorial analysis, so no further authoritative physical details can be asserted from the supplied sources.

The sources consulted for this entry (notably Sekien's Gazu Hyakki Yagyō and the Hyakki Yagyō emakimono tradition) do not attribute specific powers, behaviors, or interactions with humans to Umi Zatō. While Sekien's compendia sometimes include invented or playful entries, the available documentation for Umi Zatō contains no recorded abilities or customary actions; its role in the sources is limited to pictorial inclusion without accompanying folkloric description.