The Tanfara family's involvement in sponge diving began in 1896 with great-grandfather Roko Tanfara and has been passed down from generation to generation, from father to son, ever since. Over the course of a century-long tradition, the family has faced tragic losses while sponge diving, but these events only strengthened their commitment to continuing the craft and encouraged the family to acquire the additional knowledge and skills necessary for safe and high-quality work.

The tradition of sponge diving on the island of Krapanj dates back about 300 years, and the Tanfara family bases their work on respect for this heritage and the place where it originated. In the museum, processed sponges are hand-trimmed and prepared, and used to create various products for everyday use and as gifts: sponge ribbons, sponge caps, combinations of ribbons and caps, cellophane-wrapped sponges, traditional sponge strings, sponge magnets, bath sponges, sponges in cardboard boxes, and other sponge shapes, including ready-made gift sets.