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.
Hammerhead sharks are commonly seen in larger groups during the summer months when the hammerhead sharks are migrating together in search of cooler waters. The great hammerhead shark is the largest species of hammerhead shark and one of the few species of hammerhead shark that is potentially dangerous to humans.This is due to the sheer size of the giant hammerhead shark and also because the giant hammerhead is known to have an aggressive temperament.ammerhead sharks are commonly seen in larger groups during the summer months when the hammerhead sharks are migrating together in search of cooler waters. The great hammerhead shark is the largest species of hammerhead shark and one of the few species of hammerhead shark that is potentially dangerous to humans.