【動画】 ダイオウの次はトックリ! 深海に生息する謎のイカが発見される


研究が進んだおかげで、これまで多くの海の生物の正体が明かされてきたが、まだまだ私たちの知らない生物は存在する。特に水深数百メートルの深海生物は生で見る機会がほとんどないため、謎の多い領域だ。

その1つがトックリイカ(学名:グリマルディテウシス・ボンプランディ(Grimalditeuthis bonplandi)なる、深海に生息するイカ。学名の由来はモナコ公家・グリマルディ家(Grimaldi)とフランス科学者エメ・ボンプラン(Bonpland)から来ているという。


トックリイカはこれまで、自然の中で観察されたことのない生物だった。そのため、このイカを目にするのは巨大な魚やクジラの腹を裂いた結果(つまり死んで消化途中の状態)であることが多かったのだ。だがついに、完全な状態でその姿をとらえることに成功した。

【動画】神秘的! 深海を漂うトックリイカ(音声なし)
ネット上でも「とても美しく、魅惑的な生物だ」と感嘆の声が


ほとんどのイカには通常、食べ物をつかむための吸盤付きの触腕が2本あるのだが、トックリイカのそれはか細く、本来の役目を果たしているのか疑問視されているという。

ドイツ、キールにあるヘルムホルツ海洋研究センターでイカの研究をしているヘンク・ヤン・ホビング氏は、「トックリイカが何かを捕食しているのを実際に見た人はいません。そのため、その行動形態を断定することもできないのです」と語る。「しかしながら、トックリイカの動きはとても印象的で、小さな海洋生物のそれに良く似ています」

水深1,000メートルか、さらに深い深海に生息すると言われるトックリイカ。今回完全な姿が明らかになったものの、その生態にはまだまだ謎が多い。

【参照リンク】
・Deep-Sea Squid's Tentacles Help Animal Attract Prey, New Research Shows (VIDEO)
http://www.huffingtonpost.com/2013/08/29/deep-sea-squid-tentacles-attract-prey_n_3830898.html?utm_hp_ref=weird-science

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20 PHOTOS
驚異の映像美!BBCネイチャー・ドキュメンタリー【フォト集】
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【動画】 ダイオウの次はトックリ! 深海に生息する謎のイカが発見される
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かわいすぎる世界のクマたち【フォト集】
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【動画】 ダイオウの次はトックリ! 深海に生息する謎のイカが発見される

MILWAUKEE, WI -  JUNE 08:  Two Brown Bears, at play at the Milwaukee County Zoo on JUNE 08, 2013.

BRNO, CZECH REPUBLIC - MARCH 16:  Female polar bear Cora presents her polar bear twin cubs for the first time in public at the Brno Zoo on March 16, 2013 in Brno, Czech Republic. The cubs were born in November 2012.

BRNO, CZECH REPUBLIC - MARCH 16:  Female polar bear Cora presents her polar bear twin cubs for the first time in public at the Brno Zoo on March 16, 2013 in Brno, Czech Republic. The cubs were born in November 2012.

LAKE LOUISE, CANADA - JUNE 27: An adult grizzly bear walks through a nearby campground and picnic area on June 27, 2013 in Lake Louise, Alberta, Canada. Major flooding along the Bow River in June washed out the Trans-Canada Highway 1 for nearly a week, forcing park visitors to cancel their vacation plans.

BRNO, CZECH REPUBLIC - APRIL 24: A polar bear twin cub looks out from under its mother named Cora at Brno Zoo on April 24, 2013 in Brno, Czech Republic.  Twin cubs were born to Cora in November 2012.

TORONTO, ON - DECEMBER 26: Polar bear cub Hudson waits to be fed at the Toronto Zoo on

December 26, 2012. The 37th Annual Christmas Treats Trek allows visitors a chance to see animals being fed by zookeepers.

BRNO, CZECH REPUBLIC - JULY 24: The eight-month-old male cub Nanuk has taken to wearing the plastic traffic cone as a hat to protect from the sun in his enclosure under the supervision of his mother female polar bear Cora and sister Kometa at Brno ZOO on July 24, 2013 in Brno, Czech Republic. Both cubs were born on November 2012. According to Czech forcasters last week was one of the driest weeks since 1951 and continuing sunshine with temperatures reaching above 40 degrees Celsius for another hot weekend has been reported.

BRNO, CZECH REPUBLIC - JULY 24: The eight-month-old male cub Nanuk has taken to wearing the plastic traffic cone as a hat to protect from the sun in his enclosure under the supervision of his mother female polar bear Cora and sister Kometa at Brno ZOO on July 24, 2013 in Brno, Czech Republic. Both cubs were born on November 2012. According to Czech forcasters last week was one of the driest weeks since 1951 and continuing sunshine with temperatures reaching above 40 degrees Celsius for another hot weekend has been reported.

Kali the orphaned male polar bear cub from Point Lay, Alaska, explores the enclosure outside the infirmary at the Alaska Zoo in Anchorage, Alaska, on Friday, March 22, 2013.

BRNO, CZECH REPUBLIC - APRIL 24:  A polar bear cub looks up at Brno Zoo on April 24, 2013 in Brno, Czech Republic. One of twins, the cubs were born to mother named Cora in November 2012.

YA'AN, CHINA - APRIL 27: Giant pandas eat bamboo at the Ya'an Bifengxia Base of the China Conservation and Research Centre for the Giant Panda after a strong earthquake hit China's Sichuan Province on April 27, 2013 in Ya'an, China. All 61 giant pandas at Bifengxia Panda Base are safe after a powerful earthquake struck Lushan County of Ya'an City on the morning of April 20.

YA'AN, CHINA - APRIL 27: A giant panda eats at the Ya'an Bifengxia Base of the China Conservation and Research Centre for the Giant Panda after a strong earthquake hit China's Sichuan Province on April 27, 2013 in Ya'an, China. All 61 giant pandas at Bifengxia Panda Base are safe after a powerful earthquake struck Lushan County of Ya'an City on the morning of April 20.

YA'AN, CHINA - APRIL 27: A giant panda rests in a tree at the Ya'an Bifengxia Base of the China Conservation and Research Centre for the Giant Panda after a strong earthquake hit China's Sichuan Province on April 27, 2013 in Ya'an, China. All 61 giant pandas at Bifengxia Panda Base are safe after a powerful earthquake struck Lushan County of Ya'an City on the morning of April 20.

BRNO, CZECH REPUBLIC - JULY 24: Polar bear twin cubs named Nanuk and Kometa play with their mother female polar bear Cora at Brno Zoo on July 24, 2013 in Brno, Czech Republic. Both cubs were born on November 2012. According to Czech forcasters last week was one of the driest weeks since 1951 and continuing sunshine with temperatures reaching above 40 degrees Celsius for another hot weekend has been reported.

BRNO, CZECH REPUBLIC - APRIL 24: A polar bear cub rubs noses with its mother named Cora at Brno Zoo on April 24, 2013 in Brno, Czech Republic. The cub is one of twins born to Cora in November 2012.

BRNO, CZECH REPUBLIC - APRIL 24:  A polar bear cub sits looking at one of its paws at Brno Zoo on April 24, 2013 in Brno, Czech Republic. Twin cubs were born to mother named Cora in November 2012.

BRNO, CZECH REPUBLIC - APRIL 24: Polar bear twin cubs suckle from their mother named Cora at Brno Zoo on April 24, 2013 in Brno, Czech Republic.  The cubs were born November 2012.

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国際宇宙ステーションで撮影された、美しい長時間露光写真
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【動画】 ダイオウの次はトックリ! 深海に生息する謎のイカが発見される
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困った顔のツノメドリ
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【動画】 ダイオウの次はトックリ! 深海に生息する謎のイカが発見される

Puffin

SEAHOUSES, ENGLAND - JUNE 24:  A Puffin returns to it's nest on a cliff top on June 24, 2011 on Inner Farne, England. The Farne Islands, which are run by the National Trust, are situated two to three miles off the Northumberland coastline. The archipeligo of 16-28 separate islands (depending on the tide) make the summer home to approximately 100,000 pairs of breeding seabirds including around 36,000 Puffins, 32,000 Guillemots and 2,000 pairs of Arctic Terns. The species of birds which nest in internationally important numbers include Shag, Sandwich Tern and Arctic Tern. The coastline around The Farnes are also the breeding ground to one of Europe's largest Grey Seal colonies with around 4,000 adults giving birth to 1500 pups every year.

SKOMER ISLAND, UNITED KINGDOM - JULY 20:  An adult Puffin flaps its wings on Skomer Island on July 20, 2010 in Pembrokeshire, Wales. The island which has the biggest Puffin colony in Southern Britain plays host to over 10,000 Puffins, who come from April to the end of July to breed. The small island, off the coast of southwest Wales and managed by the Wildlife Trust of South and West Wales, is one of the most important and accessible seabird breeding sites in Europe and has become a Mecca for wildlife and bird lovers. As well as the Puffins the island is also home to a large breeding seabird population, including Manx Shearwaters, Guillemots, and Razorbills as well as birds of prey including Owls, Kestrels and Falcons. As a result Skomer is a National Nature Reserve, a Site of Special Scientific Interest and a Special Protection Area. Much of Skomer has also been designated an Ancient Monument and it is also surrounded by a Marine Nature Reserve.

SKOMER ISLAND, UNITED KINGDOM - JULY 20:  An adult Puffin watches from the cliff tops on Skomer Island on July 20, 2010 in Pembrokeshire, Wales. The island which has the biggest Puffin colony in Southern Britain plays host to over 10,000 Puffins, who come from April to the end of July to breed. The small island, off the coast of southwest Wales and managed by the Wildlife Trust of South and West Wales, is one of the most important and accessible seabird breeding sites in Europe and has become a Mecca for wildlife and bird lovers. As well as the Puffins the island is also home to a large breeding seabird population, including Manx Shearwaters, Guillemots, and Razorbills as well as birds of prey including Owls, Kestrels and Falcons. As a result Skomer is a National Nature Reserve, a Site of Special Scientific Interest and a Special Protection Area. Much of Skomer has also been designated an Ancient Monument and it is also surrounded by a Marine Nature Reserve.

SKOMER ISLAND, UNITED KINGDOM - JULY 20:  An adult Puffin watches from the cliff tops on Skomer Island on July 20, 2010 in Pembrokeshire, Wales. The island which has the biggest Puffin colony in Southern Britain plays host to over 10,000 Puffins, who come from April to the end of July to breed. The small island, off the coast of southwest Wales and managed by the Wildlife Trust of South and West Wales, is one of the most important and accessible seabird breeding sites in Europe and has become a Mecca for wildlife and bird lovers. As well as the Puffins the island is also home to a large breeding seabird population, including Manx Shearwaters, Guillemots, and Razorbills as well as birds of prey including Owls, Kestrels and Falcons. As a result Skomer is a National Nature Reserve, a Site of Special Scientific Interest and a Special Protection Area. Much of Skomer has also been designated an Ancient Monument and it is also surrounded by a Marine Nature Reserve.

SKOMER ISLAND, UNITED KINGDOM - JULY 20:  An adult Puffin watches from the cliff tops on Skomer Island on July 20, 2010 in Pembrokeshire, Wales. The island which has the biggest Puffin colony in Southern Britain plays host to over 10,000 Puffins, who come from April to the end of July to breed. The small island, off the coast of southwest Wales and managed by the Wildlife Trust of South and West Wales, is one of the most important and accessible seabird breeding sites in Europe and has become a Mecca for wildlife and bird lovers. As well as the Puffins the island is also home to a large breeding seabird population, including Manx Shearwaters, Guillemots, and Razorbills as well as birds of prey including Owls, Kestrels and Falcons. As a result Skomer is a National Nature Reserve, a Site of Special Scientific Interest and a Special Protection Area. Much of Skomer has also been designated an Ancient Monument and it is also surrounded by a Marine Nature Reserve.

SKOMER ISLAND, UNITED KINGDOM - JULY 20:  An adult Puffin watches from the cliff tops on Skomer Island on July 20, 2010 in Pembrokeshire, Wales. The island which has the biggest Puffin colony in Southern Britain plays host to over 10,000 Puffins, who come from April to the end of July to breed. The small island, off the coast of southwest Wales and managed by the Wildlife Trust of South and West Wales, is one of the most important and accessible seabird breeding sites in Europe and has become a Mecca for wildlife and bird lovers. As well as the Puffins the island is also home to a large breeding seabird population, including Manx Shearwaters, Guillemots, and Razorbills as well as birds of prey including Owls, Kestrels and Falcons. As a result Skomer is a National Nature Reserve, a Site of Special Scientific Interest and a Special Protection Area. Much of Skomer has also been designated an Ancient Monument and it is also surrounded by a Marine Nature Reserve.

SKOMER ISLAND, UNITED KINGDOM - JULY 20:  An adult Puffin enters a burrow holding sandeels in its beak to feed its cheeks on Skomer Island on July 20, 2010 in Pembrokeshire, Wales. The island which has the biggest Puffin colony in Southern Britain plays host to over 10,000 Puffins, who come from April to the end of July to breed. The small island, off the coast of southwest Wales and managed by the Wildlife Trust of South and West Wales, is one of the most important and accessible seabird breeding sites in Europe and has become a Mecca for wildlife and bird lovers. As well as the Puffins the island is also home to a large breeding seabird population, including Manx Shearwaters, Guillemots, and Razorbills as well as birds of prey including Owls, Kestrels and Falcons. As a result Skomer is a National Nature Reserve, a Site of Special Scientific Interest and a Special Protection Area. Much of Skomer has also been designated an Ancient Monument and it is also surrounded by a Marine Nature Reserve.

SKOMER ISLAND, UNITED KINGDOM - JULY 20:  An adult Puffin watches from the cliff tops on Skomer Island on July 20, 2010 in Pembrokeshire, Wales. The island which has the biggest Puffin colony in Southern Britain plays host to over 10,000 Puffins, who come from April to the end of July to breed. The small island, off the coast of southwest Wales and managed by the Wildlife Trust of South and West Wales, is one of the most important and accessible seabird breeding sites in Europe and has become a Mecca for wildlife and bird lovers. As well as the Puffins the island is also home to a large breeding seabird population, including Manx Shearwaters, Guillemots, and Razorbills as well as birds of prey including Owls, Kestrels and Falcons. As a result Skomer is a National Nature Reserve, a Site of Special Scientific Interest and a Special Protection Area. Much of Skomer has also been designated an Ancient Monument and it is also surrounded by a Marine Nature Reserve.

SKOMER ISLAND, UNITED KINGDOM - JULY 20:  An adult Puffin prepares to enter a burrow holding sandeels in its beak to feed its chicks on Skomer Island on July 20, 2010 in Pembrokeshire, Wales. The island which has the biggest Puffin colony in Southern Britain plays host to over 10,000 Puffins, who come from April to the end of July to breed. The small island, off the coast of southwest Wales and managed by the Wildlife Trust of South and West Wales, is one of the most important and accessible seabird breeding sites in Europe and has become a Mecca for wildlife and bird lovers. As well as the Puffins the island is also home to a large breeding seabird population, including Manx Shearwaters, Guillemots, and Razorbills as well as birds of prey including Owls, Kestrels and Falcons. As a result Skomer is a National Nature Reserve, a Site of Special Scientific Interest and a Special Protection Area. Much of Skomer has also been designated an Ancient Monument and it is also surrounded by a Marine Nature Reserve.

SKOMER ISLAND, UNITED KINGDOM - JULY 20:  An adult Puffin prepares to enter a burrow holding sandeels in its beak to feed its chicks on Skomer Island on July 20, 2010 in Pembrokeshire, Wales. The island which has the biggest Puffin colony in Southern Britain plays host to over 10,000 Puffins, who come from April to the end of July to breed. The small island, off the coast of southwest Wales and managed by the Wildlife Trust of South and West Wales, is one of the most important and accessible seabird breeding sites in Europe and has become a Mecca for wildlife and bird lovers. As well as the Puffins the island is also home to a large breeding seabird population, including Manx Shearwaters, Guillemots, and Razorbills as well as birds of prey including Owls, Kestrels and Falcons. As a result Skomer is a National Nature Reserve, a Site of Special Scientific Interest and a Special Protection Area. Much of Skomer has also been designated an Ancient Monument and it is also surrounded by a Marine Nature Reserve.

SEAHOUSES, ENGLAND - JUNE 25:  A Puffin returns to it's nest with a beak full of sand eels on June 25, 2011 on Inner Farne, England. The Farne Islands, which are run by the National Trust, are situated two to three miles off the Northumberland coastline. The archipeligo of 16-28 separate islands (depending on the tide) make the summer home to approximately 100,000 pairs of breeding seabirds including around 36,000 Puffins, 32,000 Guillemots and 2,000 pairs of Arctic Terns. The species of birds which nest in internationally important numbers include Shag, Sandwich Tern and Arctic Tern. The coastline around The Farnes are also the breeding ground to one of Europe's largest Grey Seal colonies with around 4,000 adults giving birth to 1500 pups every year.

SEAHOUSES, ENGLAND - JUNE 24:  A Puffin stands near it's burrow on a cliff top on June 24, 2011 on Inner Farne, England. The Farne Islands, which are run by the National Trust, are situated two to three miles off the Northumberland coastline. The archipeligo of 16-28 separate islands (depending on the tide) make the summer home to approximately 100,000 pairs of breeding seabirds including around 36,000 Puffins, 32,000 Guillemots and 2,000 pairs of Arctic Terns. The species of birds which nest in internationally important numbers include Shag, Sandwich Tern and Arctic Tern. The coastline around The Farnes are also the breeding ground to one of Europe's largest Grey Seal colonies with around 4,000 adults giving birth to 1500 pups every year.

SEAHOUSES, ENGLAND - JUNE 24:  A Puffin stands on a cliff top on June 24, 2011 on Inner Farne, England. The Farne Islands, which are run by the National Trust, are situated two to three miles off the Northumberland coastline. The archipeligo of 16-28 separate islands (depending on the tide) make the summer home to approximately 100,000 pairs of breeding seabirds including around 36,000 Puffins, 32,000 Guillemots and 2,000 pairs of Arctic Terns. The species of birds which nest in internationally important numbers include Shag, Sandwich Tern and Arctic Tern. The coastline around The Farnes are also the breeding ground to one of Europe's largest Grey Seal colonies with around 4,000 adults giving birth to 1500 pups every year.

SEAHOUSES, ENGLAND - JUNE 24:  Puffins stands on a cliff top on June 24, 2011 on Inner Farne, England. The Farne Islands, which are run by the National Trust, are situated two to three miles off the Northumberland coastline. The archipeligo of 16-28 separate islands (depending on the tide) make the summer home to approximately 100,000 pairs of breeding seabirds including around 36,000 Puffins, 32,000 Guillemots and 2,000 pairs of Arctic Terns. The species of birds which nest in internationally important numbers include Shag, Sandwich Tern and Arctic Tern. The coastline around The Farnes are also the breeding ground to one of Europe's largest Grey Seal colonies with around 4,000 adults giving birth to 1500 pups every year.

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5 PHOTOS
映画『ハングオーバー!!! 最後の反省会』
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【動画】 ダイオウの次はトックリ! 深海に生息する謎のイカが発見される
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