Baleen Baleen Baleen is a filter-feeder system inside the mouths of baleen whales. The baleen system works by a whale opening its mouth underwater and taking in water. The 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 consists of keratin, the same substance found in human fingernails and hair. Baleen is a skin derivative. Some whales, such as the bowhead whale, have longer baleen than others. Other whales, such as the gray whale, only use one side of their
What Did the Ancient Israelites Eat? What Did the Ancient Israelites Eat? What Did the Ancient Israelites Eat? Diet in Biblical Times is a 2008 book by Nathan MacDonald that discusses the foods eaten by Israelites during the time that the Bible was written. MacDonald, a theologian who serves as a lecturer at St Andrews University, used biblical texts as well as archaeological and anthropological evidence in his attempts to determine the diet of the Israelites. MacDonald decided to write the book while writing another book on the symbolism of food in the Hebrew Bible that contained a chapter on the diet of the Israelites. Nathan