Compared with spotted seals along Sea of Japan and Sea of Okhotsk, Spotted seals of Liaodong Guif had one base insertion at site 16296 of mtDNA, which prove to be marker between these two populations.

• 与日本海和鄂霍茨克海斑海豹相比，辽东湾斑海豹线粒体DNA的16296位点有1个碱基的插入，这个插入可以区分这几个海区斑海豹种群。