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使用可程式設計海底攝像機拍攝的格陵蘭鯊魚

子 C 成像

  • Potentially living over 400 years, Greenland Sharks have the longest lifespan of any known vertebrate

  • Using the subsea scripting API on the programmable SubC camera, researchers were able to set up a time-lapse during their deployments

  • The results of the study illustrate the potential vulnerability of the Greenland Shark

我們海洋研究所的朋友們收集了258小時的錄像，作為他們研究的一部分，以估計加拿大努納武特漁業開發和海洋保護感興趣的深水、數據貧乏地區格陵蘭鯊魚（Somniosus小頭症）的當地密度。

Blind Sharks with a Long Lifespan

The Greenland Shark is a majestic creature of the deep and one of the very few polar shark species. Potentially living over 400 years, it has the longest lifespan of any known vertebrate. Coming in at 7m long and up to 3100lbs, they are among the largest of sharks. And they’re blind! They aren’t born blind, but, all documented mature Greenland sharks have parasites attached to their eyeballs. Luckily, they have a very keen sense of smell that they rely on to hunt. As an adaptation to living in the deep, they have a high concentration of trimethylamine in their tissues, which causes the meat to be toxic.

This image identifies shark distributions in Lancaster Sound, Nunavut, Canada.

SubC Technology Makes Researching Easier

The study took place between July-September 2015 and 2016. It was conducted by deploying a baited autonomous imaging system -- the SubC Autonomous Camera System -- during joint exploratory fishing and scientific cruises. Using the subsea scripting API on the programmable subsea camera, they were able to set up a time-lapse during their 31 camera deployments. They discovered that the Greenland Shark arrived at 80% of the deployments with 142 individual sharks being identified from the video footage using unique marks on their skin.

格陵蘭鯊魚的圖像被誘餌相機所吸引。有關詳細資訊，請參閱紙張。

The Species’ Vulnerability

Devine女士說：「我們觀察到各種各樣的鯊魚大小，從長度超過三米到相當小的鯊魚，在一個特定區域不到1.5米。"雖然值得注意的是，根據我們目前對該物種成熟時最小大小的理解，我們觀察到的鯊魚中，沒有一條可能年齡足夠大，可以繁殖。

研究結果說明瞭格陵蘭鯊魚的潛在脆弱性，努納武特的蘭開斯特灣生態區對北極物種可能特別重要。

檢視格陵蘭鯊魚鏡頭的長樣本：

在下面的參考文獻中閱讀更多關於他們令人難以置信的發現：

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