benthic

基本解释

Anything at or just below the surface of the seabed—the benthic zone, in fishery parlance—gets dragged up.
海底或仅仅在海底表面下一点，用渔业的说法，就是深海底栖带，任何生活在这里的生物都会被拖上来。
The rub is that whereas there is little to confuse with a flicker of light in dark benthic recesses, any movement whatever will produce sounds.
而声学探测的缺陷在于，尽管在黑暗的深海底没有什么会干扰到闪烁光，但是任何动静都可能发出声响。
Unfortunately, the cloud contains a lot of other stuff. Anything at or just below the surface of the seabed—the benthic zone, in fishery parlance—gets dragged up.
可惜，拖网还带上来很多生活在深海区海床表面或下面的其他生物，渔业术语叫做一网打尽。

Whale bones for example are known to constitute an excellent surface on which benthic communities deprived of local sources of energy can settle and develop.
UNESCO: MEDIA SERVICES
Thus, the composition of benthic communities (the term indicates a dependency on the bottom) will rely partly on the availability of organic substances falling all the way down to the seabed.
UNESCO: MEDIA SERVICES