Start receiving our award-winning magazine today!

  • Traveling in Pairs
  • Rush hour begins.
  • Mingling With the Limulus
  • Close-up of the Frenzy
  • Horseshoe Crab Eggs
  • This large female visits every year!
  • A Typical Scene - A Female and Several Males
  • Full Counting Grid
  • Soaked But Happy Volunteers
Horseshoe Crab Survey 2013
Each year the Conservancy's volunteers convene to measure the abundance and health of horseshoe crabs, usually at high tide and under a full moon, always exhibiting flexibility and dedication in light of changing weather and beach conditions.

We’re Accountable

The Nature Conservancy makes careful use of your support.

More Ratings

x animal

Sign up for Nature eNews!

Sign Up for Nature e-News

Get our e-newsletter filled with eco-tips and info on the places you care about most.

Thank you for joining our online community!

We’ll be in touch soon with more Nature Conservancy news, updates and exciting stories.

Please leave this field empty

We respect your privacy. The Nature Conservancy will not sell, rent or exchange your e-mail address. Read our full privacy policy for more information. By submitting this form, you agree to the terms of use.