试想一下，如果我们的脑袋是透明的话……这个想法有点吓人，但在海里确实有一种脑袋透明的鱼。一起来见识一下吧。
美式发音 适合泛听
Photographed 2,000 feet deep in the Pacific Ocean off the California coast, the Macropinna microstoma, known as the “barreleye” fish, is small and dark with large fins, a tiny mouth, and unusual barrel eyes under a transparent dome. The two green spheres in the video are the lenses of its 1)tubular eyes. The eyes are enclosed within the transparent shield, sort of like the glass 2)canopy of a jet fighter. Above the mouth, the two dark capsules that appear to be eyes actually contain the fish’s 3)olfactory organs or the equivalent of4)nostrils.
大鳍后肛鱼，也就是“管眼鱼”，在美国加利福尼亚州海岸对开的太平洋水下两千英尺（约609米）处被拍到。这是一种鳍大、嘴小的深色小鱼，它透明的头罩里有一双不同寻常的管状眼。在视频里看到的两个绿色的球是它管状眼的晶状体，它的眼睛被包在透明的罩里，就好像是喷气式战斗机的玻璃保护罩一样。在鱼嘴的上方两个看起来像眼睛的深色的囊其实装着鱼的嗅觉器官，也就是相当于鼻孔的器官。
Typically, the barreleye sits quietly in the water, using its big fins for stability while it scans the water above for food. When it spots food, it can rotate its eyes to look forward to include its mouth in the field of view. Scientists speculate that the barreleye steals food from 5)siphonophores,6)elongated jellies with 7)tentacles that capture prey that swims into them. They believe the barreleye swims in to the tentacles and steals the food from the siphonophore. The shield over its eyes protects them from the stinging cells of the siphonophore’s tentacles. The barreleye can also rotate its eyes to avoid predators or avoid being captured by scientists.
一般情况下，管眼鱼会安静地呆在水里，用自己的大鳍保持身体的平稳，而双眼则扫视着上方的水域寻找食物。它一旦看到了食物，就会把双眼转向前方，这时，自己的嘴也包括在视野里了。科学家推测，管眼鱼从管水母那里偷食物。管水母是一种带触角的长形水母，通常靠捕捉游到自己体内的猎物为食。科学家相信管眼鱼游到管水母的触角处偷食物，它头上的保护罩可以让它免受管水母触角里刺细胞的伤害。管眼鱼还会转动眼球来逃避敌人，或者逃避被科学家逮着。
The fish, discovered alive by the Monterey Bay Aquarium Research Institute, is the first specimen of its kind to be found with its soft transparent dome intact. It’d been known since 1939, but only from mangled specimens dragged to the surface by nets.
这种鱼的活体是加州蒙特雷湾水族馆研究院发现的，这也是这种头上有透明保护软罩的鱼首次完好无损地被发现。这种鱼早在1939年就已为人所知，但当时它是被渔网拖出水面，混在一堆各种各样的鱼里。
