McCollough scoured the catalogue and developed an expertise for identifying humpbacks based on their distinct shape, color and markings.
McCollough查找了整个目录，在基于鲸鱼们各自截然不同的形状、颜色、斑纹的基础上，她培养出了一种辨别座头鲸的技能。
Unlike orca, which are odontocetes or toothed whales, humpbacks are mysticetes, harmless leviathans with only baleen plates in their mouths.
座头鲸不像齿鲸亚目鲸或齿鲸，它们是须鲸亚目、无害的大海兽，嘴里只有须鲸板。
Last year, the same ship was discovered to have a dead fin whale - which, like humpbacks, are classified as endangered - pinned to its bow when it returned to Vancouver.
就在去年，这艘船在返回温哥华途中，人们发现一条死亡的长须鲸——与座头鲸一样被列为濒危物种的鲸——就卡在船头。
Feeding grounds for the humpbacks are usually farther offshore, but scientists said this year weather conditions have brought anchovies closer to land, and the whales have followed.
驼背鲸的进食范围通常远离海岸，但是科学家说，今年的天气条件让凤尾鱼更靠近沙滩，于是鲸鱼尾随而至。
Fin whales make pulsed sounds at around 20 Hertz, while humpbacks sing at much higher frequencies.
长须鲸的声音频率是20赫兹，座头鲸更高一点。
Fin whales make pulsed sounds at around 20 Hertz, while humpbacks sing at much higher frequencies.
长须鲸的声音频率是20赫兹，座头鲸更高一点。
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