Sunday, May 27: Monitoring Horseshoe Crab Breeding with NYC Audubon

Please join us for our next event Monitoring Horseshoe Crab Breeding with the New York City Audubon on Sunday, May 27 at 6 PM. We will be visiting Big Egg Marsh in Jamaica Bay in Queens to see one of the most fantastic natural events- horseshoe crab breeding. Each year, horseshoe crabs come to the eastern coastal shores of North America to breed in the hundreds. However, because of environmental factors such as pollution, habitat degradation and overharvesting, their populations are in decline. The New York City Audubon annually monitors horseshoe crab breeding to assess the stability of the population and this year we are again joining them for a night to assist with the census. Training for the horseshoe crab monitoring will happen on site with a representative from the NYC Audubon.

This event is FREE! However, we have limited spaces available. If you are interested in attending, please send an email to to make a reservation.



If you sign up for this event, you MUST attend. No-shows jeopardize the entire survey!!

This event will NOT be canceled in the event of heavy rain.


Confirmed attendees should meet promptly at 6 PM at the Broad Channel train station stop on the Far Rockaway Bound A line. If you have a car and prefer to drive, you can drive directly to the Jamaica Bay and arrive no later than 6:30 PM but please contact us directly for directions to the designated parking area. Please call (917) 809-9422 if you have trouble finding us. Additional information and waivers from the MSNH and NYC Audubon will be emailed to you upon confirmation of your reservation. 

Horseshoe crabs, espite their name and superficial resemblance, are not crabs. They actually belong to their own class Xiphosura in Chelicerata, an arthropod group that also includes the classes Arachnida (spiders, scorpions, ticks, etc), Eurypterida (the extinct sea scorpions and also MSNH's logo taxon), and Pycnogonida (sea spiders). Worldwide only four extant species of horseshoe crabs exist and all species except the Atlantic horseshoe crab, Limulus polyphemus, are found in the Indo-Pacific Ocean. Extinct horseshoe crab species have also been described and the oldest fossil, found in Canada, dates to the Upper Ordovician, 445 million years ago! Despite their remarkable old age, horseshoe crabs have changed little morphologically since their first appearance and are therefore often referred to as 'living fossils' in the scientific literature. 


NB: Our photographer will be taking photos of this event for our website. If you attend this event and do not wish to have your photo posted to our website, PLEASE let us know in your reservation and we will accommodate.

NB: By attending this event, you agree that The Metropolitan Society of Natural Historians, Inc., its officers, its event organizers and leaders are in no way responsible for any injuries or property damage that may occur during this event or travel to and from the event location.