Look for these at Lighthouse beach on teh high tide line. Angulate Wentletrap shells This shell always reminded me of a unicorn's horn.
rocks in the ocean
Nautical Ocean Sea Water Boat Boating Waves Water Cloud Clouds Sailing Sail Art Design Photography PhotoSnap Oceans
Puka Shells: "In Hawaii, the wearing of puka shells was traditionally thought to ensure a peaceful and safe voyage, especially for sailors on a long journey, so puka shell necklaces were worn by those who had to travel at sea." -via Wikipedia
This will work for the game as we want a limbo style background and this represents it perfectly.