Genome assembly of Littorina saxatilis: metrics. A) BlobToolKit Snailplot shows N50 metrics. The main plot is divided into 1,000 size-ordered bins around the circumference with each bin representing 0.1% of the 1,256,336,603 bp assembly. The distribution of scaffold lengths is shown in dark gray with the plot radius scaled to the longest scaffold present in the assembly (111,777,080 bp, the smallest of the three arcs, also shown in red). Next two sectors in size (orange and pale-orange arcs) show the N50 and N90 scaffold lengths (67,515,031 and 44,900,717 bp), respectively. The pale gray spiral shows the cumulative scaffold count on a log scale with white scale lines showing successive orders of magnitude. The dark-blue and pale-blue area around the outside of the plot shows the distribution of GC, AT, and N percentages in the same bins as the inner plot. B) BUSCO scores for the genome and predicted proteins for the Eukaryota, Metazoa, and Mollusca datasets.