A gannet stares me down in New Zealand. Gannets hunt fish by diving from a height into the sea and pursuing their prey underwater using the following adaptations: 1) No external nostrils (they are located inside the mouth instead) 2) Air sacs in the face and chest under the skin (which act like bubble wrapping, cushioning the impact with the water) 3) The position of their eyes far enough forward on the face to allow for binocular vision and as such judge distances accurately.