The aphotic zone is that part of the ocean not reached by sunlight, and aphotic plants are those that grow there without photosynthesizing. The aphotic layer of the ocean is generally starts at a depth of about 100 meters, below which there is insufficient sunlight for photosynthesis.

The Tagalog word for "aphotic" is "madilim."

There is no photosynthesis

the temp. of the aphotic zone biome is freezing and gets colder in depth.

Aphotic zone is the area of a lake or an ocean which gets little or no sunshine throughout the year.