Fins for beginners Stay agile under water with Mirage’s Fathom Dive Fins. These Mirage Fins are every beginner’s must-have, suited for smaller feet. The adjustable heels allow for bare feet or swim socks for extra comfort as you propel into the deep. The bottom paddler is also made of polymer for increased momentum. Available in a bright black and blue colour scheme, watch the children play in the ocean or find your friends under the water in seconds. Whether you’re snorkelling the Great Barrier Reef or exploring the shores of your local beach, the Fathom Dive Fins are the perfect fit.