Hundreds of horseshoe crabs have started to make their way onto the shore at New Jersey beaches to mate.<br /><br />The third week of May marks the tradition that sees the female crabs lay their tiny green eggs in the sand.<br /><br />According to the New Jersey State Park Service, the world’s largest concentration of these crabs - which are actually an ancient cousin of the scorpion - can be found on Delaware Bay.<br /><br />Thousands of eggs are expected to hatch at the next full moon - but only if they don’t get eaten by birds.
