Undulate ray

About

Undulate rays live on soft seabeds like sand and mud where they can bury themselves underneath the sediment. Instead of teeth, they have crushing plates which help them to feed on their diet of crustaceans.

Although it is commonly called the undulate ray, it is actually a species of skate (sometimes known as the undulate skate). Skates and rays are closely related and look similar, but you can spot the difference by looking at the tail. Skates have a short tail with small fins and no stinging capabilities, whereas rays have a long whip-like tail.

How to identify

The undulate ray is easily recognisable thanks to the dark wavy pattern on its back. Small spines run down the centre of the animal and along the whole tail.

Did you know?

The undulate skate lays eggs commonly called ‘mermaid’s purses’, which are made of keratin, the same material making our hair and nails. You can find empty egg cases along the shore that have been brought in by the tide.

How people can help

The Wildlife Trusts are working with sea users, scientists, politicians and local people towards a vision of 'Living Seas', where marine wildlife thrives. Do your bit for our Living Seas by supporting your local Wildlife Trust or checking out our Action Pages.