What is the zodiac sign Cetus?

Cetus is not considered to be a part of the zodiac, though it is very close to the ecliptic and planets do rarely appear in this constellation. If it were interpreted in a chart, it would deal with issues related to the mother, as its myth is often associated with Tiamat. It may also deal with the underworld, the subconscious or perhaps be an indicator of how the native will fair when travelling by sea.