One of such opinions is that because it keeps for a long time, surume is a symbol of happiness that lasts for many years, another one is that since the Muromachi period, money has been referred to as 'oashi' (legs) whereby surume with many legs (tentacles) brings good fortune.
日持ちの良い食品であることから末永く幸せが続くという意味とする説、室町時代の頃からお金を「お足」といい、足の多いスルメは縁起が良いとする説などがある。