Why sailfish can swim so fast?

2009-11-17 7:06 pm
a) Why sailfish can swim so fast?
(Answers should referring to their body structure, muscle tissue etc)

b) What is the purpose of such high speed? To escape from enemy, to prey others? etc.

回答 (1)

2009-11-18 8:49 am
✔ 最佳答案



a) Why sailfish can swim so fast?
(Answers should referring to their body structure, muscle tissue etc)

因為旗魚or劍魚(正名係馬林魚),佢地身體體形為流線形,方面去水同減低水阻,而佢地咀部為尖銳形狀or劍狀,方便破開前方既水流,亦有效減低水阻。
而身體無鱗都係為左減低水阻。 而佢地既尾部肌肉發達,左右擺動提供極佳既前進推動力,背上既大魚旗為方向舵,在高速尾部擺動仍然能夠保持向前方向。

b) What is the purpose of such high speed? To escape from enemy, to prey others? etc.

基本上成年既旗魚體型巨大(閒閒地都成幾百磅重),甚少有天敵,高速係為左獵食為主。(有新聞播過既短片,影住一條藍旗魚用時速80公理去追住拖釣既假餌,速度好快好快)



收錄日期: 2021-04-13 16:56:44
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091117000051KK00256

檢視 Wayback Machine 備份