アマビエ

Etymology
Likely a corruption of [katakana: ], a mythical creature said to foretell disease or poor harvest. Attested since at least 1846 (see quotation below).

Noun



 * 1) a mythical creature said to emerge from the sea and predict either good harvest or epidemic disease

Usage notes
The creature came to national prominence during the after its image was said to prevent pandemic disease.