For his part , darwin noted in on the origin of species that a bear swimming with its mouth agape to catch insects was a plausible evolutionary starting point for whales 达尔文在《物种原始论》第一版中说道，在美洲有人观察到黑熊一面在水中游泳，一面张大嘴巴捕捉昆虫，我们可以合理地推测那是鲸豚类的演化起点。
Japan ' s stock of whale meat from hunting for scientific research is so large that the country has begun selling it as dog food , a leading marine conservation organisation said on friday 世界鲸豚保护学会日前指出，日本已将以科研名义捕杀的大量鲸鱼肉制作成狗食出售。据路透社2月10日报道，鲸豚保护学会指出，尽管
That fossil material , along with analyses of dna from living animals , has enabled scientists to paint a detailed picture of when , where and how whales evolved from their terrestrial forebears 化石证据以及现生动物dna的分析结果，使科学家充分掌握了鲸豚自然史的大关大节，可以回答鲸豚何时、何地以及如何演化的问题了。
More than 100 rescuers , including secondary school students , afcd staff , whale specialists from ocean park and firemen , worked hard for 7 hours to try to get the young whale back into the sea , but eventually failed 大批中学生、渔护署人员、海洋公园鲸豚专家、消防员合力拯救7小时，行动至晚上终告失败，幼鲸需人道毁灭。
The environmental group said the whales and dolphins on show at the brandenburg gate had been collected from european beaches , demonstrating that many were killed during commercial fishing or in accidents with ships 他们表示，布兰登堡大门的这些死鲸豚，来自欧洲的各个海岸，可以证明有许多鲸豚死于商业捕鱼或船只擦撞意外中。
Their results showed convincingly that among living animals , whales are most closely related to the even - toed hoofed mammals , or artiodactyls , a group whose members include camels , hippopotamuses , pigs and ruminants such as cows 他们的结果证明，在现生哺乳类中，鲸豚与偶蹄类最亲近；骆驼、河马、猪及牛羊等反刍动物都属于偶蹄类。
At around the same time , another group recovered additional remains of pakicetus ? a lower jaw fragment and some isolated teeth ? that bolstered the link to mesonychids through strong dental similarities 大约在同时，另一个团队找到了更多巴基鲸化石（一块下颚化石碎片与一些个别的牙齿） ，支持鲸豚类与中爪兽因为牙齿极为相似而有演化关联的说法。
Now , wdcs said , it had found a web site advertising whale meat for pet food , extolling its virtues as " organic " and " safe and healthy " coming from factories already processing whale meat for human consumption 鲸豚保护学会表示，日本目前已经在网上刊登出了用鲸肉制成的狗食的并宣称这种“有机的健康安全的”狗食来自生产供人类食用的鲸肉的工厂。
Paleontologists have uncovered a wealth of whale fossils spanning the eocene epoch , the time between 55 million and 34 million years ago when archaic whales , or archaeocetes , made their transition from land to sea 古生物学家已经找到了丰富的始新世古鲸化石，也就是现生鲸豚的祖先；他们发现古鲸是在5500 ~ 3400万年前的始新世，从陆栖动物演变成海栖动物的。
The wdcs said japan ' s stockpile of whale meat stood at 4 , 800 tonnes last year compared with 673 tonnes in march 1998 , and that this year it had doubled its hunt of minke whales as well as adding humpback and fin whales to the tally 鲸豚保护学会指出， 1998年，日本囤积的鲸肉为673吨，这一数字到2005年迅速上升为了4800吨。据鲸豚保护学会估计， 2006年，日本又将增加1700吨的鲸肉囤积量。
