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.
Believe it or not, the Hammerhead has the ability to sport a nice tan! They are one of very few animals who tan from the sun. This happens to the shark because Hammerheads are often cruising in shallow water or near the surface for extended periods of time. Raw Video Of A Hammerhead Shark