"The crab scuttled toward its hole. "Sacculina is a parasite that infests saltwater crabs. It burrows into their flesh and extends tendrils into the … - Daniel Suarez

"The crab scuttled toward its hole. "Sacculina is a parasite that infests saltwater crabs. It burrows into their flesh and extends tendrils into the crab’s bloodstream and brain. It chemically castrates the crab and becomes its new brain — controlling it like a zombie.