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.
Another unique type of shark is the Hammerhead Shark. It has a long head that looks like they ends of a hammer on both sides of it. Many people are afraid of it due to the way that it looks. Yet it is very unlikely that they will attack a person.