Sponges are among the most ancient living Metazoa and generally form symbiotic relationships with complex communities of microorganisms. Despite the constant influx of seawater microorganisms resulting from their filter-feeding activities; they can maintain specific symbiotic communities. These symbioses have been known to partially underpin the metabolic exchange between symbiont and host, by regulating the macro-micro cycling. A comprehensive analysis of microbial symbiont communities associated with intertidal sponges. Initially, we made an effort to barcode the sponges occurring across the western cost of Maharashtra and Goa. With this extensive data set, we aimed to define the diversity, variability, specificity and similarity of symbiont communities across the phylum Porifera and determine the interaction patterns and evolutionary forces that shape their complexity and composition.