What primary consumer is in the abyssal?

In the abyssal zone, primary consumers primarily include various species of deep-sea organisms that feed on organic material falling from above, such as detritivores and scavengers. One notable example is the abyssal sea cucumber, which feeds on detritus and microorganisms found on the ocean floor. These organisms play a crucial role in the deep-sea ecosystem by recycling nutrients and supporting higher trophic levels.