HSymV2.0: a chromosome-level genome assembly of Hydractinia symbiolongicarpus

We constructed the first chromosome-level genome assembly of <em>Hydractinia symbiolongicarpus</em> (the HSymV2.0 assembly) using PacBio HiFi long-read sequencing and Hi-C scaffolding. The HSymV2.0 assembly (NCBI accession number: JARBIS000000000) is 483 Mb in total length with 15 chromosomes, which represent 99.8% of the assembly. We also provide its genome annotation with 25,959 protein-coding genes as well as cDNA/CDS/Protein sequences. Index for cellranger is also provided for single-cell RNA-seq analysis. The HSymV2.0 assembly will be an invaluable resource for the research community performing a wide range of studies with <em>H. symbiolongicarpus.</em>