Why is there a large amount of horseshoecrab washed up on cape cod beaches?

A large number of horseshoe crabs often wash up on Cape Cod beaches due to a combination of natural behaviors and environmental factors. During breeding season, they migrate to shore to spawn, leading to increased sightings along the coastline. Additionally, factors like strong tides, storms, and changes in water temperature can displace them, resulting in more crabs being found on the beaches. Such occurrences can be part of their natural life cycle, but may also indicate ecological shifts or stressors in their habitat.