獨角獸是虛構的，獨角鯨卻是真實存在的
以下參照於百度
獨角鯨可能是世界上最神秘的動物之一，它們只生活在北極水域，速度極快，神出鬼沒，又叫海洋獨角獸。在中世紀，獨角鯨的牙被當作獨角獸的角遠銷歐洲和東亞。
~~~~~~~~~~~~~~~~~~~~~~~感覺很多人都對這種生物有些陌生，我就再補充一下答案吧，其實之前的沒有特別的切題。。。檢討一下~~~~~~~~~~~~~~~~~~~~~~
首先解答一下大家很容易誤會的點
·雖然叫獨角鯨，但是那個不是角！！是牙齒！！！是左側的一枚向外生長的牙齒！！
這個牙齒主要不是用來所謂的破冰或是捕食，而是獨角鯨的神經感知器官（
innervatedsensory organ）的作用，上面分布了上百萬的神經末梢。用來感知周邊海水的環境，從而刺激大腦做出反應，同時現在猜測它們互相摩擦「角」是一種交流行為。但是偶爾它們也利用「角」做出富有攻擊性的行為
（wiki原文）The tusk is an
innervatedsensory organwith millions of patent
nerve endingsconnecting seawater stimuli in the external ocean environment with the brain.
The rubbing of tusks together which males engage in is now hypothesized to communicate information about the water each has traveled through rather than to represent the previously assumed 「male-to-male rivalry「.
Narwhals have only occasionally been observed using the tusk for aggressive behavior.
在wiki上找到的一些關於獨角鯨的 神話 的故事。
·在因努伊特人的傳說中，獨角鯨的「獠牙」的來歷，是因為一個腰間被魚叉的繩索纏繞的女人因為繩索另一頭的魚叉命中了一只獨角鯨後將此女拽進水中，隨後她也變成了一只獨角鯨。由於她當時束了一個螺旋狀的發髻，此後這個發髻演變為了今天我們看到的以螺旋形為主要特征的「角」（實際上是向外張的牙）的來歷。
（話說。。紐因特人之前發現的這個物種難道沒有角嗎。。這個神話貌似有漏洞的樣子！！）
·一些中世紀的歐洲人認為獨角鯨的「角」就是傳說中獨角獸的角，有解毒和治愈抑郁癥的功效（是看了就會狂喜從而忘憂的意思嗎！！= =）
In Inuit legend, the narwhal's tusk was created when a woman with a harpoon rope tied around her waist was dragged into the ocean after the harpoon had struck a large narwhal. She was transformed into a narwhal, and her hair, which she was wearing in a twisted knot, became the characteristic spiral narwhal tusk.
Some medieval Europeans believed narwhal tusks to be the horns from the legendary unicorn.
As these horns were considered to have magic powers, such as neutralising poison and curing melancholia, Vikings and other northern traders were able to sell them for many times their weight in gold.
剛剛看到一個戳中萌點的圖！！
（圖片源於網絡）
