Professional mermaids risk hypothermia, seasickness and the cling of skin-tight silicone, but the reward is becoming an ‘ocean ambassador’ – and a bit more colour in the world

Propelled by a shimmering silicon tail, Katrin Gray spins underwater, blowing kisses to the audience as her long, copper hair floats around her face. Her seemingly effortless movement is anything but – a professional mermaid’s free diving and performance skills require training, practice and total concentration.

Mermaiding has become a global cottage industry, with pageants, conventions, retreats and meet-ups, where people gather in “pods” to practise their dolphin kicks. Makers create bespoke tail flukes, bejewelled bras, mermaid hair and even prosthetic gills for professional and hobbyist “seasters”. There is even a Netflix reality series called MerPeople, which documents the occasionally perilous journey of several aspiring professional merfolk. “No dead mermaids,” is the motto of one business featured.