This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Shachihoko (Japanese)
A Shachihoko is a sea monster in Japanese folklore with the head of a dragon and the body of a carp covered entirely in black or grey scales. According to the tale, Shachihoko lives in the cold northern ocean. Its broad fin and tails always point up toward heaven, and its dorsal fins have numerous sharp spikes.
It can swallow a massive amount of water and hold it in its belly, as well as summon clouds and control the rain. Although believed to come from the sea, they are often constructed high on the roof standing upside down. The shachihoko’s origins may go even further back, to India. In Hindu mythology, there is a large sea monster named Makara who is half-fish and half-beast.