Baleen is often called whalebone, but that name also can refer to the normal bones of whales, which have often been used as a material, especially as a cheaper substitute for ivory in carving.he whale then pushes the water out, and animals such as krill are filtered by the baleen and remain as food source for the whale. Baleen is similar to bristles and is made of keratin, the same substance found in human fingernails and hair.
Marco Polo (game) The game Marco Polo /ËmÉËrkoÊ ËpoÊloÊ/ is a form of tag played in a swimming pool. The origin of the game is unknown.
A team is made up of four polo players. A polo match is usually played outdoors. A polo field is 300 yards long and 160 yards wide, the largest field in organized sport. A polo match lasts about one and one-half hours and is divided into timed periods called chukkers. Each chukker is seven minutes long.