"My dive at Puri Pinnacle was a heart-pounding experience," says Stock. "Seconds after descending to the reef I saw millions of ethereal, glittering anchovies race over me, their bodies shimmering in the sun. They passed barely a foot from me with a huge woosh – the energy was wild and exhilarating. The anchovies were highly motivated – these little fish were swimming for their lives. Not far behind, hunting jacks were picking off the slower swimmers. Due to the highly reflective skin of anchovies and their tendency to blow out under flash-photography, I knew I  had to shoot this fast paced image carefully. I reduced my strobes to the lowest setting and my shutter speed to 250."