Green turtles use wave propogation direction and magnetic channels to help them navigate.
Green turtles primarily use vision to detect plants and other prey and use visual displays when communicating.
They also use a sense of wave propogation direction to help them navigate under water and rely on magnetic channels to assist their orientation in deep waters. The turtles’ inner ear can detect the acceleration and direction of waves, which assists their sense of direction.
Sources: (Hersh, 2016; Hirth, 1997; Lohmann & Lohmann, 1995; Lohmann, Swartz, & Lohmann, 1996)
Image: César Guadarrama Cantú