They live in the most remote places on earth, facing environmental extremes like desert drought and frequent flooding for generations.

他们生活在地球上最偏远的地方，世世代代面临沙漠干旱和频繁洪水等极端环境。

While it may be hard to determine exactly why these animals have evolved to have certain capabilities like bioluminescence, enlarged fangs, or gaping mouths, their similar deep-sea environmental extremes may have played a part.

虽然可能很难确切地确定为什么这些动物会进化出某些能力，例如生物发光、 扩大的尖牙或张开的嘴巴，但它们类似的深海极端环境可能起到了一定的作用。