Scylla and Charybdis

Scylla and Charybdis are two mythical sea monsters from Greek mythology, located on opposite sides of the Strait of Messina. They represent an inescapable dilemma, where avoiding one danger means encountering another. The idiom "between Scylla and Charybdis" refers to a situation where one must choose the lesser of two evils or face equally perilous options.