Sometimes the humpback will dive with a fantastic movement known as a breach.During breaching the whale uses its powerful tail flukes to lift nearly twothirds of its body out of the water in a giant leap.A breach might also include a sideways twist with fins stretched out like wings, as the whale reaches the height of the breach.
A humpback whale breathes air at the surface of the water through two blowholes which are located near the top of the head.It blows a double stream of water that can rise up to 4 metres above the water.
The humpback has a small dorsal fin located towards the tail flukes about twothirds of the way down its back.Other distinguishing features include large pectoral fins, which may be up to a third of the body length, and unique black and white spots on the underside of the tail flukes.These markings are like fingerprints: no two are the same.
Humpback whales live in large groups.They communicate with each other through complex “songs”.
Quick Facts
Size: 14m18m in length;
3050 tons in weight
Living
environment: Open ocean and shallow coastline waters
Migration: From warm tropical (热带的) waters, where they breed, to cold polar waters, where they eat
Diet: Shellfish, plants and fish of small size
Hunting: Sometimes in groups, in which several whales form a circle under the water, blowing bubbles that form a “net” around a school of fish.The fish are then forced up to the surface in a concentrated mass.
【2017届高三英语一轮复习课时作业14:Unit 3《The Million Pound Bank Note》(新人教版必修3)】相关文章:
★ (安徽专用)2014届高考英语一轮复习方案 作业手册(12)模块4 《Unit 12 Culture Shock》(含解析) 北师大版必修1
★ 【三维设计】2017届高考英语(江苏专用)二轮复习课件:必修3 Unit 3《Back to the past》
★ 四川省2016届高考英语一轮复习课时作业(44) Module 2 The Renaissance 外研版选修8
★ 【北师大版】2014届高考英语一轮复习指导课时作业:Unit 3 A卷 Word版含解析
★ 【北京专用】2014届高考英语一轮复习方案课时作业:必修3 Unit 5 Canada
★ 2017届江苏省淮安市新马中学高考牛津译林版英语一轮复习活动单:模块7 unit 4《Public transport》
★ 2014届高考英语一轮复习课时作业(十六)必修3Module 4《Sandstorms in Asia》(外研版)
★ 【新人教版 必修1】2016届高三英语一轮总复习(佳作诵读+考点锁定+高频考点+课堂双基+课时作业)精品课件《unit 2 English around the word》
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21