海绵 Traditional form: 海綿 Pinyin (reading): hǎimián Definitions: (zoology) sea sponge (esp.) dried sea sponge sponge (made from polyester or cellulose etc) foam rubber Characters: 海 - sea, ocean; maritime 绵 - continuous, unbroken; cotten, silk; soft, downy Traditional characters: 海 - sea, ocean; maritime 綿 - continuous, unbroken; cotten, silk; soft, downy