IPA: //ˌbaɪ.oʊ.səˈnoʊ.sɪs//
KK: /baɪoʊsəˈnoʊsɪs/
A community of different species living together in a specific environment, interacting with each other and their surroundings.
The biocoenosis of the coral reef includes various fish, corals, and other marine organisms that depend on each other for survival.
Biocoenosis → It is formed from "bio-" (from Greek "bios", meaning life) and "coenosis" (from Greek "koinos", meaning common or shared). The word describes a community of living organisms that share a common environment and interact with one another.
Think of 'life' ('bio-') shared among different organisms in a community ('coenosis') — that's what biocoenosis means.