鲸是世界上个体最大,声音最响亮的水栖哺乳动物,体形颇似鱼,故俗称鲸鱼。根据有无牙齿可分为两大类——齿鲸类和须鲸类。鲸的经活价值很大:皮可制革,肉可食,脂肪可制成机械油、肥皂、蜡烛等,骨可作骨粉,内脏可作维生素制剂。早先,世界上鲸类资源相当丰富,近一百年来由于几个鱼业大国的滥捕滥猎,这类世界上珍贵的哺乳动物正频临灭绝境地。它们在死亡线上挣扎着。 Whales are the largest and most loud aquatic mammals in the world. They are quite similar in shape to fish, so they are commonly known as whales. According to whether there are teeth can be divided into two categories - tooth whales and beards. The whale’s living value is great: leather can be leather, edible meat, fat can be made of mechanical oil, soap, candles, etc., bone can be used as bone meal, viscera can be used for vitamin preparations. Earlier, the world’s cetacean resources are very rich, nearly a hundred years due to the overfishing of several fishing big powers, such precious mammals in the world are coming to an end. They are struggling with the death line.