| estimating age ratios and size of pacific walrus herds on coastal haulouts using video imaging. | during arctic summers, sea ice provides resting habitat for pacific walruses as it drifts over foraging areas in the eastern chukchi sea. climate-driven reductions in sea ice have recently created ice-free conditions in the chukchi sea by late summer causing walruses to rest at coastal haulouts along the chukotka and alaska coasts, which provides an opportunity to study walruses at relatively accessible locations. walrus age can be determined from the ratio of tusk length to snout dimensions. we ... | 2013 | 23936106 |