Subsurface swimming and stationary diving are metabolically cheap in adult Pacific walruses (Odobenus rosmarus divergens) - Borque-Espinosa, Alicia; Rode, Karyn; Ferrero-Fernandex, Diana; Forte, Anabel; Capaccioni-Azzati, Romana; Fahlman, Andreas (Journal of Experimental Biology, 2021)