Last Updated：2022/12/24
There are sharks with round pupils, sharks with slitlike pupils, and some with pupils that expand and contract with the amount of light available. As unimpressive as this might sound to people who are used to having their pupils dilate and contract regularly, realize that no bony fish has this modification of the eye.
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There
are
sharks
with
round
pupils,
sharks
with
slitlike
pupils,
and
some
with
pupils
that
expand
and
contract
with
the
amount
of
light
available.
As
unimpressive
as
this
might
sound
to
people
who
are
used
to
having
their
pupils
dilate
and
contract
regularly,
realize
that
no
bony
fish
has
this
modification
of
the
eye.
