In subsequent citations, only use the first author's last name followed by et al. in the signal phrase or in parentheses. (Kernis et al., 1993). In et al. , et should not be followed by a period.
Transcript of Hammerhead Shark Eyes. Structure of Eye. The structure of a hammerhead sharks eye is very similar to the human eye, they have a cornea, lens, retina, pupil and iris. Their retina has both cone and rod cells, which means they can see light, dark, and colours.
The Anatomy of a Hammerhead Shark. There is no mistaking a hammerhead shark when you see one. The head is wide and very thick. It looks like a hammer at both ends and their eyes are set out on these ends so they are very far apart. The body is a light gray on the top with white underneath.