Largest organisms photosynthetic unicellular and multicellular protists that are related to land plants. The thallus of the unicellular mermaid's wineglass, "Acetabularia", can grow to several inches (perhaps 0.1 to 0.2 m) in length. The fronds of the similarly unicellular, and invasive "Caulerpa taxifolia" can grow up to a foot (0.3 m) long. A member of the order Cetacea, the blue whale ("Balaenoptera musculus"), is thought to be the largest animal ever to have lived. The maximum recorded weight was 190 metric tonnes for a specimen measuring , whereas longer ones, up to , have been recorded but not weighed. The African bush
The Hardest Logic Puzzle Ever situation is enormously complicated by the fact that although all the natives understand English perfectly, an ancient taboo of the island forbids them ever to use non-native words in their speech. Hence whenever you ask them a yes-no question, they reply "Bal" or "Da"—one of which means "yes" and the other "no". The trouble is that we do not know which of "Bal" or "Da" means "yes" and which means "no."" There are other related puzzles in "The Riddle of Scheherazade". The puzzle is based on Knights and Knaves puzzles. One setting for this puzzle is a fictional island inhabited