Euphemus is a character from Greek mythology, known as a hero and a son of Poseidon, the god of the sea. He is often associated with the Argonauts, a group of heroes who embarked on a quest for the Golden Fleece. Euphemus is recognized for his ability to communicate with the sea and his skill in navigating maritime challenges. In some myths, Euphemus is credited with the gift of prophecy, which he received from Triton, a messenger of the sea. His adventures often highlight themes of bravery and the importance of divine favor in ancient Greek storytelling.