benthos
/ˈbɛnθɒs/Definitions
1. noun
The community of organisms living on, in, or near the bottom of a body of water, such as a sea, ocean, or lake.
“The researcher studied the benthos of the coral reef to understand its ecosystem.”
2. noun
The organisms themselves that make up the benthos community.
“The benthos in the lake were a mix of fish, plants, and invertebrates.”