Abstract Entanglement islands play an essential role in the recent breakthrough in addressing the black hole information paradox. Inspired by double holography. it is conjectured that the entanglement islands can exist only in massive gravity. There are many pieces of evidence but also debates for this conjecture. https://www.jmannino.com/great-choice-Disney-Princess-Cinderella-Curtsy-Art-Galaxy-S10-Clear-Case-p29207-mega-find/