The chromosomal genome sequence of the sponge <i>Crambe crambe</i> (Schmidt, 1862) and its associated microbial metagenome sequences

We present a genome assembly from an individual <i>Crambe crambe</i> (Porifera; Demospongiae; Poecilosclerida; Crambeidae). The host genome sequence is 143.20 megabases in span. Most of the assembly is scaffolded into 18 chromosomal pseudomolecules. The mitochondrial genome has also been assembled and is 19.53 kilobases in length. Several symbiotic prokaryotic genomes were assembled as MAGs, including two relevant sponge symbionts, the <i>Candidatus</i> Beroebacter blanensis/ <i>AqS2</i> clade (Tethybacterales, Gammaproteobacteria) of LMA sponges, and the widely distributed archaeal <i>Nitrosopumilus</i> sp. clade.