One day Neptune the God of the seas was running around with his cart pulled by
nine white horses. While passing through the Rohen's delta he saw a men
swimming and complaining; it seems it was not happy to swim there. So Neptune
got angry and asked him, pointing his trident: " Who are you? Why do you enter
my reign if you don't need neither to fish nor to get pleasure?"
The man replied " I am Lou Camarguen, the Camarguese, I live in the Rohen's
delta, a very beautiful place, where you can see the sky reflecting in the
river."
Then Neptune, even more irritated, shouted: "Why do you keep complaining about
my reign, if you live in such beautiful place?"
" Well, I am forced to live with a terrible black bull. As soon as he sees me,
he keeps on charging me with his horns in the shape of a lyre. I am forced to
run away and I only feel safe in your reign. During summer I am happy to feel
the wind on the sea, but on winter is different: Aeolus sends the powerful
Mistral and it shakes all trees and the sea becomes very ripply. All this is
not good at all!"
Neptune often met and helped people in difficulty due to shipwrecks and
battles, so he wanted to help the Camarguese too, giving him one of his horses.
"This is the best horse I have, if you will manage to deal with him, he will be
a very precious ally against that black bull. Remember, he comes from the sea
and was led from a god, anytime he wants to run back to the sea, leave him."
The Camarguese thanked Neptune and started riding this animal and chase the
black bull: nobody did that before.
One day the man observed the bull's horns and thought of Neptune's trident and
found out a way to keep track of the bull; Nowadays in Camargue you can see men
riding white horses and holding tridents in order to lead the bulls and white
horses running free in the river.