Crabs of the Portunus genus are skilled swimmers, easily recognized by their paddle-shaped hind legs. This specimen comes from the coastal waters of the Indo-Pacific, a biodiversity-rich region where these crustaceans thrive among reefs and sandy seabeds. Presented in an observation frame with an integrated magnifying glass, it allows for a close examination of its finely detailed carapace, the structure of its legs, and the intricate patterns of its shell. A unique way to explore the anatomy of a crustacean built for speed and precision. A miniature laboratory, ready to be displayed or hung, for the curious and nature enthusiasts alike.