
Corallina is a genus of red seaweeds with hard, abrasive calcareous skeletons in the family Corallinaceae. They are stiff, branched plants with articulations. ...
Found on
http://en.wikipedia.org/wiki/Corallina

(from the article `red algae`) ...both their colour and gelatinous nature when cooked. Industrially, Irish moss (Chondrus) is used as a gelatin substitute in puddings, toothpaste, ... ...are formed by the calcareous remains of the tiny creatures known as coral polyps and hydrocorals, while the `cement` that binds these remains...
Found on
http://www.britannica.com/eb/a-z/c/140
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