Light reflects off the fish, except for light of the wavelength the fish
absorbs, making the fish hard to see which is why it must aim for the fish in
a slightly different place.
This is the change in the direction of propagation of a wave that strikes the
boundary between different mediums and in this case, the medium is
water.
The change in direction which occurs during reflection of the light
makes it harder for the Pelican ro see which is why it must aim for the
fish in a slightly different place.
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