[新聞] 稀有士多啤梨魷魚 現身美國深海峽谷

itsctsu

研究人員發現士多啤梨魷魚蹤影。

潛水器於725米海底  捕獲變色一刻

由於深海黑暗無光，人類往往難以視察海底生物。美國加州一班海洋科學家早前在聖克拉拉縣聖何塞（San Jose）以南對出海底峽谷透過遙控潛水器，成功在大約725米海底拍到一隻全身紅色且布滿發光斑點、俗稱「士多啤梨魷魚」身影。

因應當地海底幾乎全黑，蒙特雷水族館研究所（MBARI）早前派出裝有高清拍攝鏡頭的無人潛水器，在水底深度200米至3,000米海域巡視。它在海底發出光線，最終發現一隻士多啤梨魷魚。

眼睛一大一小  呈不同顏色
若不計算觸手在內，該隻魷魚長約13厘米左右，雙眼一大一小，較大眼睛是螢光綠色，而較小眼睛則是深藍色，負責視察周圍環境是否存在獵物或危險。

然而，士多啤梨魷魚並非只會呈紅色。牠能夠產生光線，從而令到身體與周邊環境顏色相近，藉此掩蓋輪廓，令其猶如隱形一樣。因此，牠在深海往往只會露出黑色身體，來避開抹香鯨及海豚等掠食者。本報綜合報道


士多啤梨魷魚全身紅色且布滿斑點。


士多啤梨魷魚能產生光線融入環境。


潛水器巡視海底。

Deep-sea sighting: The strawberry squid’s mismatched eyes are the perfect pair



During a recent deep-sea dive, our team came across one of the most remarkable residents of the ocean’s twilight zone: the strawberry squid (Histioteuthis heteropsis). MBARI’s remotely operated vehicle (ROV) Doc Ricketts spotted this crimson cephalopod 725 meters (2,378 feet) deep in Monterey Canyon. The stunning ultra high-definition resolution 4K video from the ROV Doc Ricketts allows researchers to examine deep-sea denizens in astonishing detail.

The strawberry squid has one big eye and one small eye. Together, this unlikely pair helps the squid hunt for food in the ocean’s twilight zone. The big left eye looks upward to spot shadows cast by prey in the dimly lit waters above. The eye’s tubular shape helps collect as much downwelling light as possible. Often, this eye has a yellow lens to see through the luminescent camouflage of its prey. The squid’s right eye is small and looks downward. This eye searches for flashes of bioluminescence produced by prey or predators lurking in the darker waters below. This squid is sometimes called the cockeyed squid for the remarkable difference in size between the two eyes.