Horseshoe Crab: Ancient Marine Arthropod with Unique Anatomy #3706598 (License: Personal Use)

The image displays a mature horseshoe crab, showcasing its smooth, olive-brown exoskeleton, compound lateral eyes, and six pairs of walking legs-some modified for feeding. Its long, rigid telson extends posteriorly, aiding in locomotion and orientation. The creature’s underside reveals chelicerae and book gills, critical for respiration and swimming.

Used in educational, marine biology, conservation, or medical research contexts-especially regarding their blue blood’s role in endotoxin testing. Matches user intent for learning about arthropod evolution, coastal ecosystems, or biomedical applications.