Bradshaw said they began work on Monday and despite the high temperatures this week, the mother and daughter pressed on to bring the mural to life.
“We came prepared,” she said. “We had shade, drinks and sun-protective clothing.
“People offered us drinks, sweets and ice cream. We are so touched by their kindness and support.”
John Nurden, ward councillor, said: “Although the heritage of the island is very important to us, we wanted to remind visitors that this is still very much a seaside destination.
“Our award-winning beach and promenade are popular with everyone.”
The mural also features Sir Robert de Shurland who rode his horse Grey Dolphin into the sea to seek the king’s forgiveness after slaying a monk, according to legend.
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