The mitogenomes of two species of sea pigs, and (Elasipodida: Holothuroidea: Echinodermata).

Mitochondrial genomes of and are presented, each with 13 protein coding genes, two rRNA genes, and 22 tRNA genes. That of has 15,909 base pairs and that of is 15,896 base pairs. There is a suspected tandem repeat region of undetermined length in the assemblies of both and . The gene order of both mitogenomes is identical to that of other Elasipodida. Phylogenetic analysis revealed that lies within the clade, suggesting that is paraphyletic. Sequencing of the type species, , is needed to confirm if should be renamed as .