Cetus is a constellation, sometimes called 'the whale' in English. The Cetus was a sea monster in Greek mythology which both Perseus and Heracles needed to slay. Cetus is in the region of the sky that contains other water-related constellations: Aquarius, Pisces and Eridanus.
Cetus annotated with lines (a "stick figure") from a latitude further north (north of its declination), above a horizon, in conditions ideal for observation.
Messier 77 spiral galaxy - HST (Hubble Space Telescope).
The spiral galaxy NGC 298 basks in this image from the NASA/ESA Hubble Space Telescope. NGC 298 lies around 89 million light-years away in the constellation Cetus, and appears isolated in this image — only a handful of distant galaxies and foreground stars accompany the lonely galaxy.
An alike depiction from Celestial Atlas (A. Jamieson) (1822)
In Ancient Greek ketos, Latinized as cetus, is any huge sea monster. According to the mythology, Perseus slew a cetus to save Andromeda from being sacrificed to it. The term cetacean derives from cetus. In Greek art, ceti were depicted as serpentine fish. The name of the mythological figure Ceto is derived from kētos. The name of the constellation Cetus also derives from this word.
Ancient Corinthian vase depicting Perseus, Andromeda and Ketos (Names are spelled in the archaic Corinthian variant of the Greek alphabet).
Ritual stone palette a Nereid (Sea Nymph) and a Cherub riding a Sea Monster (Ketos). Gandhara.