The tough, collagenous wall of the purse protects the developing young until it’s ready to hatch—anywhere from a month to a year after it’s laid, depending on its species.

Aaron Sprowl, a biologist in charge of the shark tank at the Downtown Aquarium, holds a zebra shark's egg, or "mermaid's purse. This is similar to the zebra shark egg hatched at the aquarium this ...

A female shark pup named Mali was caught hatching from her egg, also known as a mermaid's purse, at Misool Foundation's ReShark nursery in Raja Ampat, Indonesia. Zebra sharks bred at SEA LIFE ...

The big skates first arrived at the aquarium in dark brown egg cases, also known as a “mermaid’s purse.” These cases are made of a hard protein, with each one potentially carrying multiple ...

The Georgia Aquarium has launched a new live webcam showing a zebra shark pup inside an egg case. The pup can be seen moving about inside what is also called a mermaid’s purse. The dark spot ...

'Mermaid's purse' hatches beautiful, small water creature in beachgoer's hand A couple walking along a St. Pete Beach in Florida came across an unusual egg, a clearnose skate fish hatched and swam ...