These egg cases are known colloquially as devil's purse or mermaid's purse and contain a yolk much like any other egg.

A number of species of sharks deposit embryos in rectangular capsules once whimsically called mermaid's purses or devil's purses.

An egg case or egg capsule, colloquially known as a mermaid's purse or devil's purse, is a casing that surrounds the fertilized eggs of some sharks, skates, and chimaeras.

Once empty, the egg case is known as a mermaid's purse, and can wash up on shore.

There are typically two eggs in each capsule, which can also be called a mermaid's purse.

A mermaid's purse - symbol of the project.

A shark's egg is called a mermaid's purse.

Most species give birth to live young, although some lay eggs with a horny capsule ("mermaid's purse").

The eggs are laid in a characteristic egg capsule called a mermaid's purse, which is often found on the strand line of beaches.

Sailors would look for mermaid's purses on beaches for signs of mermaids in the area.

There are no sea sirens, but shark eggs, nicknamed mermaid's purses, wash ashore.

Modern examples are sometimes sold as 'Mermaid's Purses'.

After hatching, the empty egg capsules often wash ashore and are known as "mermaid's purses".

Shysharks are oviparous with females producing egg capsules (known as "mermaid's purses") two at a time.

Some species are aplacental viviparous, but most lay eggs in tough egg cases with curly tendrils at each end, known as mermaid's purses.

Some species are viviparous, others ovoviviparous (both giving birth to live young), but the skates lay eggs in horny cases known as mermaid's purses.

These egg cases are known colloquially as devil's purse or mermaid's purse and contain a yolk much like any other egg.

A number of species of sharks deposit embryos in rectangular capsules once whimsically called mermaid's purses or devil's purses.

Mating typically occurs in the spring and the female lays numerous eggs per clutch which are encapsulated in leathery cases, commonly known as "mermaid's purses".

Although some bear live young, the majority lay eggs with almost fully developed young; these egg cases, known as "mermaid's purses", are unique in appearance to each species.

Each egg is a leathery black eggcase with horny corners, known by the common name "mermaid's purse" (as are the eggcases of other rays, skates and sharks).

As the fertilised egg passes down the uterus, albumen and yolk are added and it is placed in a rectangular collagenous egg case known as a mermaid's purse.

The Mermaid's Purse project aims to develop partnerships between schools, local communities and businesses to make education more relevant locally as well as providing new routes and networks for the diffusion of learning.

An egg case or egg capsule, colloquially known as a mermaid's purse or devil's purse, is a casing that surrounds the fertilized eggs of some sharks, skates, and chimaeras.

The eggs of oviparous skates are laid in leathery egg cases that are commonly known as mermaid's purses and which often wash up empty on beaches in areas where skates are common.

This species is oviparous, and is one of the few skate species that typically has more than one embryo within each egg capsule, commonly called "mermaid's purses" when they are found washed up on beaches.