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.
There is no other species of shark out there that compared to the look of the Hammerhead Shark. Hammerhead Shark Description As mentioned, this species of shark has a head that is wide like the head of a hammer and then the long handle as it goes back to the rest of the body.