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 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 P ropelled by a shimmering silicone tail, Katrin Gray spins underwater, blowing kisses to the audience as her long, copper hair floats around her