Draft Genome Sequences of "Candidatus Synechococcus spongiarum," Cyanobacterial Symbionts of the Mediterranean Sponge Aplysina aerophoba.

We report here four draft genome sequences belonging to clade F of the cyanobacterium "Candidatus Synechococcus spongiarum" of the marine sponge Aplysina aerophoba, which were collected from two nearby locations in the northern Adriatic Sea. The sequences provide the basis for within-clade comparisons between members of this widespread group of cyanobacterial sponge symbionts.