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.
Finfish Species. Flatfish. Flatfishes are unique in that the skull is asymmetrical with both eyes on the same side of the head. Flatfish begin life like symmetrical fish, with an eye on each side of the head. A few days after hatching, one eye begins to migrate and soon both eyes are close together on one side.