BBC拍到南極“死亡冰柱”過路生物紛紛喪命

An underwater “icicle of death” which sinks to the seabed destroying everything it comes into contact with has been caught on camera for the first time.

The sinking brine is so cold that it causes the seawater to freeze around it.

BBC film crews recorded the brinicle for the first time ever as it sunk to the bottom of the sea in Antarctica.

When it hits the seabed, a web of ice spreads killing sea urchins and starfish.

The remarkable underwater footage was filmed for Frozen Planet on BBC One using timelapse technology.

The “icicle of death” grew so rapidly towards the seabed that teams could see it advancing before their eyes.

When the seawater freezes as it comes into contact with the brinicle. It is a lot more sponge like than normal ice.

They are usually found in the Antarctic when saline water is introduced to the ocean.據英國《每日郵報》11月24日報道，英國BBC的一位攝影師首次拍到了一條沉入海底的“死亡冰柱”，它能摧毀一切與它接近的生物。

這股高濃度的鹽水溫度極低，使得圍繞在它周圍的海水能凍結成冰。

隨着它沉入南極海洋的底部，BBC的節目攝影組有史以來第一次拍到這種冰柱。

當冰柱接觸到海底時，便會逐漸形成一張“冰網”，凍結這片海底的所有海膽和海星。

這組與衆不同的水下連續鏡頭是爲BBC的《冷凍星球》節目所拍攝的，其中使用了間隔拍攝的技術。

這種朝着海底生長的“死亡冰柱”生長速度很快，攝影人員用肉眼就能觀察到它的生長過程。

其餘的海水一接觸到這條死亡冰柱就會馬上凍結。這種冰柱比正常的冰塊看起來更像海綿。

這種死亡冰柱通常在南極洲鹽水導入海洋時出現。