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ABC News
ABC News
National

CSIRO joins great shark egg hunt and wants citizen scientists' help logging weird beach finds

Egg cases make for mysterious finds at the beach and now there is a way to identify which species they belong to. (Supplied: Will White)

It shines in the sun at the water's edge — enigmatic, beautiful and oddly shaped. What is it? A mermaid's purse? Alien life form? Not quite.

Congratulations. You've just found a shark egg case or possibly the egg case of a skate or chimera, lesser-known relatives of sharks and rays.

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