My son would like to know what this is. Found in St Augustine fl

In St. Augustine, Florida, a curious discovery has sparked interest among local residents and visitors alike. This intriguing find, submitted by user /u/GardDog, invites exploration into its origins and significance. The coastal region is rich with marine life and geological wonders, making it a fascinating area for both casual observers and dedicated researchers. Understanding this discovery could shed light on the local ecosystem and enhance our appreciation for the ocean's complexity. Join the conversation to uncover more about this captivating specimen.