Before Indigo was used, "woad" (Isatis tinctoria) was used. "Woad is an old color. A conversation with history. A natural dye. An ugly plant. Locked in green leaves, compounds that break into pigments of blue.
Sponge - A beautiful Haliclona sp. specimen from Chek Jawa, Singapore. Haliclona permollis showing multiple chimneys of a single individual sponge. Seawater is pumped continuously through a sponge by the beating activity of flagella that line the inter