Definition:
A horseshoe crab is a large sea animal that looks like a crab but has a hard, dome-shaped shell that resembles a horseshoe. They live in the ocean, especially along the Atlantic coast of North America. Horseshoe crabs are very old creatures, often referred to as "living fossils" because they have existed for millions of years and have not changed much over time.
A horseshoe crab is a fascinating marine creature with a unique shape and significant ecological importance. It is known for its long history on Earth and is often studied for its medical value.