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.
Two of the most popular types of sharks in the world are the great white shark and the hammerhead. The great white is well known for being one of the largest and most dangerous sharks to ever exist. The shark in Jaws is also a great white, which brought a lot of notoriety to the great whites. Hammerheads are also popular based on their unique head shape which is shaped like a hammer.