<prompt> Translate the following text to SwahiliHowever, the early 20th century saw several catastrophic changes that ruined the commercial sponge industry on Kalymnos.  <response>: Hata hivyo, mwanzoni mwa karne ya 20, kulikuwa na mabadiliko kadhaa yenye kuangamiza ambayo yaliharibu biashara ya sifongo huko Kalymnos. 