Abstract Horseshoe crab inhabit the Paluh Sembilang estuary. Information on the types of horseshoe crab from that area is almost none. To understand the species of horseshoe crabs present in the study area, a research has been conducted in April 2019. Samplings were conducted in along the Paluh Sembilang, everyday for two weeks period. The horseshoe crabs were caught using a mini trawl (me…