The age of sea biscuits is a topic that captivates both beachcombers and fossil enthusiasts. When you hold a sea biscuit in your hand, you might be grasping a piece of natural history that dates back millions of years. Sea biscuits, part of the Clypeasteroida order, have existed for an astonishing length of time, with fossilized specimens often found embedded in ancient sedimentary rock layers. These fossils can date back to the Miocene epoch, approximately 23 to 5 million years ago, offering a fascinating glimpse into the Earth’s distant past. The incredible age of sea biscuits is more than just a number; it’s a testament to the resilience and adaptability of these marine creatures.