This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Bakunawa (Philippine)
THe Bakunawa is a serpent-like dragon in Philippine mythology. It is believed to be the cause of eclipses, earthquakes, rains, and wind. The movements of the Bakunawa served as a geomantic calendar system for ancient Filipinos and were part of the rituals of the babaylan priestess. It is usually depicted with a characteristic looped tail and a single horn on the nose.
It was generally believed to be a sea serpent, but are also variously believed to inhabit either the sky or the underworld.[3]Bakunawa is believed to be originally a compound word meaning "bent snake", from Proto-Western-Malayo-Polynesian *ba(?)kuq ("bent", "curved") and *sawa ("large snake", "python").