A remarkable example of natural camouflage, the Lumpy Rock Crab (Euxanthus exsculptus) features a heavily sculpted carapace covered with rounded protuberances and irregular textures. Its pale cream coloration, accented by warm orange and reddish markings, enhances the rock-like appearance for which this species is known.

The specimen measures approximately 5 × 6.5 × 3 cm (1.97 × 2.56 × 1.18 in). Its robust body, textured claws and unusual surface make it an intriguing addition to marine collections, curiosity cabinets and natural history displays.

As a genuine natural specimen, slight irregularities and imperfections are part of its authentic character.