11. In gravid females red coloration turns bluish-grey and areas become blue. 12. As the two reproductive systems matured, the proglottids became gravid after fertilization. 13. Each gravid female carries 19 21 embryos inside her. 14. As the holotype was a gravid female, the spongehead catshark is likely oviparous. 15. This gravid proglottid contains the fertilized eggs, which are sometimes expelled with the feces. 16. The most posterior proglottid is the gravid stage, and it is packed with eggs. 17. Larger nodules may be the result of gravid females which may rupture the skin surface. 18. In the gravid proglottid, the uterus contains up to 15 side branches filled with eggs. 19. Juvenile snakes and gravid females remain in the rocks and move to cooler, shaded areas. 20. Gravid females on average will hold 60 eggs, but have been observed with 120 eggs.
