Horseshoe Crab Anatomy and Biology | Marine Life Guide #3047905 (License: Personal Use)

This illustration depicts the American horseshoe crab (Limulus polyphemus), showcasing its iconic domed carapace, lateral compound eyes, and spiny, sword-like telson used for righting itself. The segmented opisthosoma and book gills are subtly indicated beneath the shell, reflecting its ancient arthropod lineage dating back over 450 million years.

Used in educational biology pages, marine conservation sites, or museum exhibits to explain horseshoe crab morphology, evolution, and ecological importance-especially regarding biomedical use of their blue blood. Matches user intent for learning about marine invertebrates or preparing school/science content.