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.
Mako sharks, Seven gills and Hammerheads can all be classed as pursuit predators, relying on speed and agility to catch their prey, whereas the infamous Great White is a stalking predator; usually attempting to approach its prey undetected until the final moment of attack.asking sharks and other filter feeders like the Whale shark suck water in through their mouths as they swim and purge it through their gill slits, filtering out the food in each mouthful, occupying a similar niche to the baleen whales and the Manta ray.