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Horseshoe Crab (Limulus polyphemus)

Salem Sound Coastwatch is asking volunteers to help us learn more about horseshoe crabs in Salem Sound, particularly if they are spawning.

We are most likely to see horseshoe crabs spawning around
FULL or NEW moon at high tide. They can be found on
protected sandy beaches. Look for them on beaches where there is not a lot of wave action, such as those found in estuaries.

SSCW is also looking for historical photos of spawning beaches throughout the last century. Of special interest are images that show horseshoe crab spawning activity, but photos of typical spawning beaches are also of interest to us. Or let us know if you have a story to tell about horseshoe crabs.

horseshoe crabs burrowing

A group of burrowing horseshoe crabs along the shore.
Photo courtesy of Division of Marine Fisheries (DMF).


Tips for spotting horseshoe crab spawning habitat - courtesy of DMF.

Horseshoe Crab Facts