Do seals have pupils?

Question

Lol very insightful

Answer 1

h**l yes

Answer 2

only teacher seals

Answer 3

From one Stooge to another-Can a cat have chicks?......it sure can,-every time it gets into the hen house, ha-ha-ha... So if a cat can have chicks, seals sure have pupils

Answer 4

Yes. 2.C below talks about them. I cut and pasted it all incase you were interested in other parts of their eyes.

1. Harbor seals have large eyes. Their vision underwater is better than a human's, but inferior on land. Lenses are enlarged and almost round, adapted for focusing on light that is refracted upon entering water. The lenses are not as well-adapted for sight in air.

2. Harbor seals' eyes are adapted for sight in dark and murky water.

a. Like the eyes of other pinnipeds, harbor seals' eyes contain high numbers of rod cells—photoreceptor cells that are sensitive to low light levels.

b. Harbor seals have a well-developed tapetum lucidum, a layer of reflecting plates behind the retina. These plates act as mirrors to reflect light back through the retina a second time, increasing the light-gathering ability of the rod cells. (The tapetum lucidum is the same structure that makes a cat's eyes appear to "glow" when reflecting light at night.)

c. Under water, the pupils dilate (expand) into a wide circle to let in as much light as possible. In bright light, the pupils constrict to a slit.

3. Mucus continually washes over the eyes to protect them. Unlike most land mammals, pinnipeds lack a duct for draining eye fluids into the nasal passages. When a harbor seal is out of the water, mucus surrounding the eyes gives them a wet, "tear-rimmed" look.

4. Good vision does not seem to be essential to harbor seal survival; scientists have found blind but otherwise healthy individuals, including mothers with pups, at sea.

5. Harbor seals probably do not have color vision.