seals
Arctic seals have weird bones in their noses that help them stay warm
Bearded seals have convoluted nasal bones that help keep heat in their bodies Ole Jorgen Liodden/naturepl.com Arctic seals have evolved a nifty adaptation for staying warm in icy climes: intricate, maze-like bones in their noses. Many birds and mammals, including humans, have a pair of thin, porous nasal bones called maxilloturbinates or nasal concha, which…