They’re near the top of the list when it comes to odd objects you may find washed up on the beach.
They’re commonly known as “mermaids’ purses.”
They’re also known by some as “devils’ purses.”
What are they? Shark eggs.
The pouches, typically dark brown or black, at first glance look like alien objects.
While they look scary, the items are actually made of collagen protein and are soft and leathery to the touch.
If you come across one on the beach, there will likely be an exit tear where the babies swam out. If not, the little ones inside are likely dead.
Not all of the cases look the same. Some are dark spirals.
In the end, pretty cool.
Among the 9 orders of sharks, egg-laying can be found only in three.
It adds: “The packaging consists of a material similar to fingernails or hair and forms around a fertilized egg in the mother in an organ called the oviducal gland (sometimes referred to as the shell gland).”
“It’s unclear how that shape actually develops,” said Christopher Lowe, a marine biology professor who is in charge of the Shark Lab at California State University in Long Beach.