Tide Caller:

The Tidecaller is a sleek, dolphin-like creature that glides through the coastal waters of the Isle of Macroura. Its body is marked with glowing blue patterns, and it can control the tides with its haunting, melodic song. The Tidecaller is feared by sailors, as it is known to summon massive waves that can sink ships. Some say it delights in creating storms, watching as ships struggle against the rising waters.