Umibōzu

Japanese Mythology Yōkai sea monster in Japanese Folklore

Umibōzu is a giant, black, human-like being and is the figure of a yōkai from Japanese folklore. Other names include Umihōshi or Uminyūdō . Little is known of the origin of umibōzu but it is a mythical sea-spirit creature and as such has multiple sightings throughout Japan. Normally, umibōzu appears to sailors on calm seas which quickly turn tumultuous. It either breaks the ship on emergence or demands a bucket or barrel from the sailors and proceeds to drown them. The only safe way to escape an umibōzu is to give it a bottomless barrel and sail away while it is confused.

This keyword could refer to multiple things. Here are some suggestions: