Horseshoe Crab Anatomy Diagram - Educational Illustration #120180 (License: Personal Use)

This precise black-and-white line drawing depicts the ventral view of a horseshoe crab (Limulus polyphemus), emphasizing its semicircular prosoma, opisthosoma with spiny edges, and elongated telson used for righting itself. The illustration clearly shows the chelicerae, pedipalps, walking legs, and book gills-key features for respiration and locomotion. Such diagrams are commonly used in textbooks and field guides to teach arthropod morphology and evolutionary biology.

Used in educational resources, museum exhibits, marine biology curricula, and conservation websites to explain horseshoe crab structure, function, and ecological importance; matches user intent for learning or teaching about ancient marine arthropods.