Variations: Old Man of the Sea
Atui Koro Ekashi, the “Old Man of the Sea”, is briefly mentioned in tales from the Ainu of Hokkaido, Japan. It looks like an enormous bag, and it can generate a powerful suction from its mouth to engulf whales and ships into its bloated bulk.
A boat managed to scare off the atui koro ekashi when one sailor threw his loincloth into the creature’s mouth. Even giant bag-monsters find loincloths disgusting, and the boat was released.
Chamberlain, B. H. (1888) Aino Folk-Tales. The Folk-Lore Society XXII, C. G. Röder, Leipzig.