![Spiral shark egg a Port Jackson Shark, Heterodontus portusjacksoni egg found on beach, NSW, Australia Stock Photo - Alamy Spiral shark egg a Port Jackson Shark, Heterodontus portusjacksoni egg found on beach, NSW, Australia Stock Photo - Alamy](https://c8.alamy.com/comp/R21NKW/spiral-shark-egg-a-port-jackson-shark-heterodontus-portusjacksoni-egg-found-on-beach-nsw-australia-R21NKW.jpg)
Spiral shark egg a Port Jackson Shark, Heterodontus portusjacksoni egg found on beach, NSW, Australia Stock Photo - Alamy
![Great White Montauk 在Twitter 上:"Shark vs. Egg Case... who do you think won? 🤗🦈💥 What a capture! The moment a crested horn shark was feeding on the egg case of a Great White Montauk 在Twitter 上:"Shark vs. Egg Case... who do you think won? 🤗🦈💥 What a capture! The moment a crested horn shark was feeding on the egg case of a](https://pbs.twimg.com/media/EE0yrm5WkAEdcQD.jpg)
Great White Montauk 在Twitter 上:"Shark vs. Egg Case... who do you think won? 🤗🦈💥 What a capture! The moment a crested horn shark was feeding on the egg case of a
![Discovery of a new mode of oviparous reproduction in sharks and its evolutionary implications | Scientific Reports Discovery of a new mode of oviparous reproduction in sharks and its evolutionary implications | Scientific Reports](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41598-020-68923-1/MediaObjects/41598_2020_68923_Fig1_HTML.jpg)
Discovery of a new mode of oviparous reproduction in sharks and its evolutionary implications | Scientific Reports
Now Science News - This is a shark egg aka mermaids purse - An egg case or egg capsule is the casing that surrounds the eggs of oviparous sharks, skates, and chimaeras.
![The great shark egg hunt: the charity project that's got us combing beaches | Voluntary Sector Network | The Guardian The great shark egg hunt: the charity project that's got us combing beaches | Voluntary Sector Network | The Guardian](https://i.guim.co.uk/img/static/sys-images/Guardian/Pix/pictures/2015/7/31/1438340182405/83a8162e-edd2-49c1-ac6b-e4a0f9169a4f-2060x1236.jpeg?width=465&quality=45&auto=format&fit=max&dpr=2&s=23d173c4499c2885768299fba658c5e4)