ABSTRACT
“
Candidatus
Synechococcus spongiarum” represents the widespread cyanobacterial symbionts found in marine sponges with relatively high genomic variability and likely important ecological roles. We present here the draft genome sequence of “
Candidatus
Synechococcus spongiarum” m9, which was assembled from a metagenome of
Theonella swinhoei
sampled in the South China Sea.