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Thornback Ray

(Raja clavata)

The most commonly encountered ray around the British Isles, it's easy to see where the Thornback Ray got its name from – just check out the spines on its back!

Thornback ray © Paul Naylor www.marinephoto.co.uk
Thornback ray © Paul Naylor www.marinephoto.co.uk

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Overview

Thornback Rays are found around all British coasts and feed mainly on crustaceans -although they are not above taking any fish that swims a little too close! The Thornback Ray buries itself in sediment during the day and comes out at dusk to hunt.

Closely related to sharks, rays also have a soft cartilage skeleton. Their oversized pectoral fins give them their distinct diamond shape and act a bit like underwater wings.

Key Facts

  • With a distinctive kite shaped body, Thornback Rays can also be recognised by their blotchy brown or grey back and collection of ‘thorns’ on their back and tail. Some other ray species also have thorns, but the Thornback Ray has the biggest.
  • Although their jaws are small they are extremely powerful, allowing them to crush through the shells of crabs and other crustaceans with ease.
  • Length: Up to 139cm Weight: Up to 18kg Average Lifespan: Can live for around 15 years

Status

The Thornback Ray is listed as Near Threatened on the IUCN Red List

Seasonality

All year round

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