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die rose的博客

执着地迈向成功、酝酿成熟。人生是一连串教训,经历了才会理解

 
 
 

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我不可能做到别人要求我做每一件事,我只有足够时间去做我该去做的事情。如果我无法把每件事情都作到尽善尽美,这便意味着我想做的事情已经超过了我该去做。认清了自己的人生坐标,我的生活变得更为简单了,作息安排也更为合理。 魅力由它而生,它是苦难的根源,也是塑造坚强现在的原因。愿意相信别人,能够承担别人的信任,相信别人却是极其艰难的决定。心底的秘密存在于过去,找到那个能接受过去的人,就能有勇气焚毁所有的担心,融化冰封的城堡,让世界大地回春。

形形色色的海中鳐鱼  

2010-07-24 16:39:44|  分类: fashion |  标签: |举报 |字号 订阅

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先普及一下,以免晕头:魟、鳐、鲼都属于软骨鱼纲(Chondrichthyes)板鳃亚纲(Elasmobranchii)鳐目(Rajiformes),魟、鳐、鲼属于不同科。魟和鳐的区别是,魟的尾为尾鞭型,无鳍;而鳐则为有鳍尾,一般为歪型尾;鲼具有头翼,这是魟和鳐缺少的

斑点鹰魟(Spotted Eagle Ray)

Photo: A group of eagle rays gliding through water
A school of spotted eagle rays glides gracefully through the island-speckled waters of the Maldives. The rays are often seen gathering in groups near the surface, “flying” through the water by flapping their pectoral fins and sometimes even leaping porpoise-like into the air. The ray’s dorsal side, invisible in this image, is covered with a signature pattern of vivid spots.

一群斑点鹰魟姿态优雅的掠过马尔代夫群岛水域。魟鱼经常会成群的聚集在水面以下,通过拍动胸鳍在水中“飞行”,有时候甚至会像海豚一样跃出海面。由于角度的问题,斑点鹰魟那覆盖着标志性斑点图案的背部没办法看得到。
Manta Ray

蝠鲼(Manta Ray)

Photo: Manta ray above coral

Each year lunar tides and Indian Ocean monsoon currents combine to drive plankton and tropical krill into confined bays around the islands of the Maldives. These protein-packed waters invite large concentrations of manta rays to an all-you-can-eat buffet. Despite their large size, with wingspans stretching up to 12 feet (3.6 meters), as many as 200 mantas may pack a football field-sized bay during these feeding frenzies.

每一年,随着潮汐和印度洋季风洋流的汇合,大量的浮游生物和热带磷虾涌入了马尔代夫群岛的狭窄海湾中,如此丰沛的食物吸引了数量极多的蝠鲼来此赶赴这场饕餮盛宴。尽管它们体型巨大,光是翼幅展开就宽达3.6米,但在这种狼吞虎咽的关键时刻,一块只有足球场大的海湾区域还是有多达200只的蝠鲼挤在一起。
Stingray

Photo: A stingray on the ocean floor
Stingrays often rest on the seafloor, sometimes partially buried in the sand and color-camouflaged from predators like sharks. The ray also deters would-be attackers with a sharp, venomous tail barb. The barb can deliver a lethal blow even to humans, but incidents are extremely rare. Stingrays are fairly docile and typically strike only when provoked.

刺鳐经常会在海床上待着不动,有时候身体的一部分还会埋在沙子里,同时依靠身体的色彩伪装来躲避鲨鱼等掠食者的捕猎。另外,刺鳐的尾部还有一根锋利有毒的尾刺,可以用来恫吓潜在的威胁者,其致命一击的能力甚至让人类也感到胆寒,不过这种攻击案例极为罕见,它们的性格相当温顺,只有在被挑衅时才会进行反击。
Manta Ray and Wrasse

蝠鲼(Manta Ray)和 濑鱼(Wrasse)

Photo: Fish cleaning parasites off a manta ray
Manta rays regularly visit “cleaning stations” where small wrasse fish clean them of parasites.
蝠鲼会定期造访“清理站”,在那里,小濑鱼会帮助它们清理身上的寄生虫。
It was recently discovered that mantas, found throughout the world’s tropical and semitropical waters, are actually at least two distinct species—the smaller mantas familiar to divers and their larger, more reclusive relatives, which migrate long distances in the open sea. Unlike stingrays, manta rays do not have venomous tail barbs.

科学家们最近才发现,热带和亚热带海域的蝠鲼实际上至少可以分为两个不同的种类:潜水员们常见的是体型较小的蝠鲼;而体型更大的另一种蝠鲼则不太常见,它们会在大洋中作远距离迁徙。和刺鳐不一样,蝠鲼没有剧毒的尾刺。
Stingrays

刺鳐群

Photo: Two stingrays cruising a sandy seafloor
Two stingrays cruise through crystal-clear waters near Grand Cayman. Like their close relatives the sharks, the 200-odd species of stingrays are boneless fish that boast skeletons made of tough tissue called cartilage. Some stingrays are bottom feeders and dine on crabs, clams, shrimp, and worms. Other species, like the devil rays, feed on plankton strained from ocean waters.

在大开曼岛(Grand Cayman)附近,两只刺鳐正在清澈见底的海水中游弋着。刺鳐是鲨鱼的近亲,种类有200多种,善于无骨鱼类,其骨架是由软骨构成的。有些种类的刺鳐属于底层鱼类(bottom feeders),靠吃螃蟹、蛤蚌、虾和蠕虫为生;还有些刺鳐如魔鬼鱼则依靠从海水中过滤浮游生物为食。
Cownose Ray

牛鼻魟(Cownose Ray)

Photo: A cownose ray swims in a tank

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