セミクジラ
The four species of the Balaenidae are found in temperate and polar waters; "Eubalaena glacialis" (North Atlantic right whale), "Eubalaena japonica" (North Pacific right whale), "Eubalaena australis" (southern right whale), and "Balaena mysticetus" (bowhead whale). Bowhead and right whales can reach up to 18 meters in length and over 100 tons at maturity.