Hatchlings of Limulus polyphemus often entangle their legs in the first few days after hatching. (photo Extavour)

Limulus polyphemus embryo approx. one week before hatching. (photo Extavour)

Limulus polyphemus embryo approx. 10 days before hatching. (photo Extavour)

Limulus polyphemus hatchling. (photo Extavour)

Limulus polyphemus embryos at various different stages.
(photo Extavour)