關於鯊魚...快!!

2007-03-20 6:24 am
關於鯊魚...快!!(English)

回答 (3)

2007-03-20 6:37 am
✔ 最佳答案
Sharks are a group (superorder Selachimorpha) of fish with a full cartilaginous skeleton and a streamlined body. They respire with the use of gill slits along the side of, or beginning slightly behind, the head. Sharks have a covering of dermal denticles on their bodies to protect their skin from damage, parasites and to improve fluid dynamics. They have several rows of replaceable teeth.

Please visit http://en.wikipedia.org/wiki/Shark to see a picture of a shark.

Sharks include species from the hand-sized pygmy shark, Euprotomicrus bispinatus, a deep sea species of only 22 cm in length, to the whale shark, Rhincodon typus, the largest fish, which grows to a length of approximately 12 metres (41 feet) and which, like the great whales, feeds only on plankton through filter feeding. The bull shark, Carcharhinus leucas, is the best known of several species to swim in both salt and fresh water and in deltas. Trawler fisherman Lee Dreyer, from Queensland, Australia, netted 64 aggressive bull sharks in the Logan River, south of Brisbane, in less than three hours last month while fishing about 100m east of the Pacific Motorway bridge. Please visit http://www.theaustralian.news.com.au/story/0,20867,20426230-5006786,00.html to read about the huge number of bull sharks spotted in Australian rivers and lakes.

Bull sharks are extremely agressive and they have been named as one of the most dangerous in the world, and is linked to numerous attacks that lead to serious injuries and deaths.

Recently, new species of shark have been discovered off the coast of Indonesia, It is a type of small, slender-bodied sharks that "walk" with their fins along coral reefs, researchers announced today. Please visit http://news.nationalgeographic.com/news/2006/09/060918-walking-shark.html to see a picture of the shark that can walk with their fins.
參考: =]
2007-03-20 6:35 am
鯊魚 Wikipedia
鯨鯊 WHALE SHARK
短鰭鮫鯊 SHORTFIN MAKO
黑點鯊 BLACKSPOT SHARK
牛奶鯊 MILK SHAR
細眼鯊 SLITEYE SHARK
細鋸鯊 NARROW SAWFISH
翼頭鯊 WINGHEAD SHARK
沙洲鯊 SANDBAR SHARK
黑色捕鯨鯊 BLACK WHALER

2007-03-19 22:36:46 補充:
BULLHEAD SHARK(牛頭鯊) WHITE CHEEK SHARK(白頰鯊) BLACKTIP REEF SHARK(黑鰭礁鯊) BLUNTNOSE SHARK(鈍鼻鯊) SPECKLED SHARK(斑點鯊) EPAULETTE SHARK(肩章鯊) BROWN-BANDED CATSHARK(棕帶鯊) MARBLED CATSHARK(花斑鯊) RETICULATED SWELLSHARK(網紋鯊) BANDED WOBBEGONG(帶紋鯊) TASSELLED WOBBEGONG(穗紋鯊)

2007-03-19 22:38:23 補充:
在水中看見海洋的掠食者-鯊魚是令人感到恐懼與害怕的。鯊魚的感覺器官可以感測超過30公尺以外的震動。鯊魚也具有敏銳的嗅覺能力,其腦部 2/3 的功能大部份都運用在嗅覺上,大約400公尺遠的血腥味道,鯊魚都能聞到。鯊魚同時具有相當好的聽覺能力,大約 1000 公尺以外的動物活動聲音,鯊魚也可以聽見;除了具有良好的視覺、嗅覺、聽覺、感覺及味覺外,鯊魚更具有感測電子波訊號的能力,這種能力可以協助鯊魚的水中導航及掠食。

2007-03-19 22:39:03 補充:
鯊魚與其他魚類不同,鯊魚具有彈性的軟骨骨架,沒有魚鰾,當不游動時,鯊魚會下沈至海床上,不過鯊魚具有一大型的多油肝臟,可以增加其浮力。鯊魚具有數排的牙齒嵌在牙齦之中,不與顎相連,並經常的交替運用。很不幸的,這類漂亮的魚類被好萊塢及媒體描繪成可怕的殺人魚。而事實上,250 種的鯊魚中,只有少數的鯊魚會對人類造成傷害。        大部份的鯨鯊生活在沿海地區,有時也會出現在近海地區。鯨鯊擁有龐大的身軀,身體並有白色斑點花紋,是世界上最大的魚類。鯨鯊以浮游生物為食,沒有攻擊性。鯨鯊通常在3月~4月間出現在氣候溫暖的熱帶水域中,深度可到達18 m,但通常很少超過 12m。     

2007-03-19 22:40:15 補充:
在水中看見海洋的掠食者-鯊魚是令人感到恐懼與害怕的。鯊魚的感覺器官可以感測超過30公尺以外的震動。鯊魚也具有敏銳的嗅覺能力,其腦部 2/3 的功能大部份都運用在嗅覺上,大約400公尺遠的血腥味道,鯊魚都能聞到。

2007-03-19 22:40:30 補充:
鯊魚同時具有相當好的聽覺能力,大約 1000 公尺以外的動物活動聲音,鯊魚也可以聽見;除了具有良好的視覺、嗅覺、聽覺、感覺及味覺外,鯊魚更具有感測電子波訊號的能力,這種能力可以協助鯊魚的水中導航及掠食。鯊魚與其他魚類不同,鯊魚具有彈性的軟骨骨架,沒有魚鰾,當不游動時,鯊魚會下沈至海床上,不過鯊魚具有一大型的多油肝臟,可以增加其浮力。鯊魚具有數排的牙齒嵌在牙齦之中,不與顎相連,並經常的交替運用。很不幸的,這類漂亮的魚類被好萊塢及媒體描繪成可怕的殺人魚。而事實上,250 種的鯊魚中,只有少數的鯊魚會對人類造成傷害。
2007-03-20 6:32 am
鯊魚 (SHARK)

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在水中看見海洋的掠食者-鯊魚是令人感到恐懼與害怕的。鯊魚的感覺器官可以感測超過30公尺以外的震動。鯊魚也具有敏銳的嗅覺能力,其腦部 2/3 的功能大部份都運用在嗅覺上,大約400公尺遠的血腥味道,鯊魚都能聞到。鯊魚同時具有相當好的聽覺能力,大約 1000 公尺以外的動物活動聲音,鯊魚也可以聽見;除了具有良好的視覺、嗅覺、聽覺、感覺及味覺外,鯊魚更具有感測電子波訊號的能力,這種能力可以協助鯊魚的水中導航及掠食。鯊魚與其他魚類不同,鯊魚具有彈性的軟骨骨架,沒有魚鰾,當不游動時,鯊魚會下沈至海床上,不過鯊魚具有一大型的多油肝臟,可以增加其浮力。鯊魚具有數排的牙齒嵌在牙齦之中,不與顎相連,並經常的交替運用。很不幸的,這類漂亮的魚類被好萊塢及媒體描繪成可怕的殺人魚。而事實上,250 種的鯊魚中,只有少數的鯊魚會對人類造成傷害。
鯨鯊 (WHALE SHARK)       
大部份的鯨鯊生活在沿海地區,有時也會出現在近海地區。鯨鯊擁有龐大的身軀,身體並有白色斑點花紋,是世界上最大的魚類。鯨鯊以浮游生物為食,沒有攻擊性。鯨鯊通常在3月~4月間出現在氣候溫暖的熱帶水域中,深度可到達18 m,但通常很少超過 12m。      
WHALE SHARK(鯨鯊)
LEOPARD SHARK(豹鯊)
TAWNY SHARK(棕鯊)
GREY NURSE SHARK(灰鯊)
SMALL TOOTH THRESHER SHARK(小牙長尾鯊)
BULLHEAD SHARK(牛頭鯊)
WHITE CHEEK SHARK(白頰鯊)
BLACKTIP REEF SHARK(黑鰭礁鯊)
BLUNTNOSE SHARK(鈍鼻鯊)
SPECKLED SHARK(斑點鯊)
EPAULETTE SHARK(肩章鯊)
BROWN-BANDED CATSHARK(棕帶鯊)
MARBLED CATSHARK(花斑鯊)
RETICULATED SWELLSHARK(網紋鯊)
BANDED WOBBEGONG(帶紋鯊)
NORTHERN WOBBEGONG(北方鯊)
TASSELLED WOBBEGONG(穗紋鯊)


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