Sea Biscuits 3 1/2 to 4" Sold Each. Discover the timeless beauty of authentic sea biscuits, nature's delicate treasures from the ocean floor. Each piece, measuring 3 1/2 to 4 inches, showcases the intricate patterns and warm, natural tones that only the sea can create. These genuine specimens carry the story of ancient marine life, making them perfect for collectors, decorators, and anyone drawn to the ocean's mysteries. Whether displayed in a curated collection, nestled in a shadow box, or incorporated into coastal décor, each sea biscuit is a unique window into the underwater world. Sold individually, allowing you to build your collection one remarkable piece at a time.