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.
polo - a game similar to field hockey but played on horseback using long-handled mallets and a wooden ball. 1  field game - an outdoor game played on a field of specified dimensions. 2  stick - a long implement (usually made of wood) that is shaped so that hockey or polo players can hit a puck or ball.