👉 Balaenids are a group of marine animals that live in the Arctic Ocean and the surrounding waters. They belong to the family Balaenopteridae, which includes various species such as whales, seals, penguins, and walruses. These animals are known for their unique adaptations, including long limbs, large ears, and thick fur coats. Some balaenids also have specialized bladders that help them swim in逆流而上。