Cetus

Cetus ( /ˈsiːtəs/) is a constellation. Its name refers to Cetus, a sea monster in Greek mythology, although it is often called 'the whale' today. Cetus is located in the region of the sky that contains other water-related constellations such as Aquarius, Pisces, and Eridanus.

Read more about Cetus:  History and Mythology, Namesakes