The "northern right whale" (Eubalaena glacialis) is designated as the official state migratory marine mammal.
S.C. Code Ann. § 1-1-713
Official state migratory marine mammal
2009 Act No. 58, SECTION 3, eff upon approval (became law without the Governor's signature on June 3, 2009).
Official source: South Carolina Legislature. Reproduced from public-domain South Carolina statutes; confirm against the official source for the current text. Not legal advice.