Tracey Williams has spent years of her life looking for needles in haystacks.
Tracey lives on the beach in Cornwall, where nearly three decades ago, a storm led to a cargo ship spilling masses of LEGO parts into the sea.
These LEGO parts are washing up on beaches around England.
Tracey has made it her mission to collect and catalogue as many of these pieces of plastic as possible, and to draw attention to the wider issue of plastic pollution.
She joins Emile Donovan.