@california.shelling Some sharks give birth to live young, and others are oviparous, meaning they lay eggs. California horn sharks mothers lay these corkscrew egg cases. When it comes out, it is very pliable, but hardens over time. Hope this lil guy makes it! 🦈 #shark #sealife #oceanlife #fyp ♬ original sound - California.Shelling
"After laying, the female picks up the auger-shaped egg cases and wedges them into crevices to protect them from predators." (I found some videos of sharks transporting and eating the casings, but not burying them.)