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Cuckoo ray

Scientific name: Leucoraja naevus
It’s easy to identify this distinctive skate from the black and yellow marbled eye spots on each wing.

Species information

Statistics

Length: Up to 75 cm
Weight: Up to 2.5kg
Average Lifespan: Can live for up to 8 years

Conservation status

The cuckoo skate is listed as Least Concern by the global IUCN Red List assessment but is categorised as Vulnerable in Ireland.

When to see

Present all year round

About

The cuckoo ray is able to feed on small crustaceans and worms, and sometimes fish using the crushing plates that replace teeth in its mouth. Young cuckoo rays are more commonly found further offshore, whereas adults are often found close to shore.

Although it is commonly called the cuckoo ray, it is actually a species of skate (sometimes known as the cuckoo 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 cuckoo ray is easily recognisable due to the black and yellow marbled eye spots on each wing. Four rows of thorns run down its lower back and along its tail.

In our area

The Cuckoo Ray is categorised as Vulnerable in our local seas and there is evidence that suggests that Belfast Lough and the Antrim Coast are potential nursery areas for the species. Through the Sea Deep project we hope to identify these critical areas and ensure spatial protections for these species.

Distribution

Found in the warmer waters in the Northeast Atlantic and Mediterranean; UK coastlines represent the most northerly limits of the range of this species.

Did you know?

The cuckoo ray lays between 70 to 150 eggs per year. These eggs are commonly called ‘mermaid’s purses’ and empty ones can be found washed up along the shore line.

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.