Metrics comparison between our results and the previous studies for the holobionts M1 (Cnidaria-Dinophyta) and M2 (Porifera-Bacteria). The total assembled contigs for holobionts M1a and M2 compared to the assembled meta-transcriptomes from a Pinzon et al. 2015  and b Fiore et al. 2015  are shown. General details about de novo assembly and functional annotation (termed FA) features are presented in corresponding tables for a holobiont M1a versus Pinzon et al. 2015  meta-transcriptome, and b holobiont M2 versus Fiore et al. 2015 . NC means that the exact number is not communicated.