The complete mitochondrial genome of the <i>Tonna galea</i> (Linnaeus, 1758) (Gastropoda: Tonnidae)

The complete mitochondrial genome of the giant tun shell, <i>Tonna galea</i> (Linnaeus, 1758), was sequenced using a hybrid Illumina and Nanopore approach. The assembled mitochondrial genome is a circular 17,504 bp molecule, encoding the typical 37 genes (13 PCGs, 22 tRNAs, and two rRNAs). Mitogenomic phylogenetic analysis robustly places <i>T. galea</i> as a sister taxon to <i>Tonna dolium</i> (Linnaeus, 1758). Additionally, the analysis strongly supports a close phylogenetic relationship between the families Tonnidae and Bursidae. These findings offer essential genetic insights into the phylogenetic framework of the family Tonnoidea.