This powerful series of photographs captures the moment a father helped deliver his own twins - in a water birth that ended up being even more extraordinary than expected.
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That's because the second of the two babies to be born was born still inside the amniotic sac - a phenomenon which occurs in only one in 80,000 births.
One of the photos, taken by Robin Baker, even won the International Association of Professional Birth Photographers' 2016 Image of the Year Competition.
Watch the video above to see the incredible and moving images which capture a truly special moment for the parents.
