Limulus is a genus of horshoe crab
We guide the brine shrimps to go to the horseshoe crab by using flashlights. The brine shrimp are attracted to the light.
Feeding on brine shrimps
Feeding on brine shrimps
You can identify the gender of horshoe crab by looking at its very front
Horseshoe Crab Anatomy
Under a Horseshoe crab
Real picture of horshoe crab legs, mouth.
Credits: Dauphin Island Sea Lab
https://www.youtube.com/watch?v=rmlOAlodt54