Thornback Ray Eggcase & Map

Maximum Eggcase Length: ~12cm (ranges from 10–15cm)
Eggcase Length (without horns): ~6.5cm (ranges from 5-8cm)
Maximum Eggcase Width (with keels): ~4cm (ranges from 3–7cm)

The Thornback Ray has a widespread distribution across the Eastern Atlantic from Iceland to South Africa, including the North Sea, western Baltic Sea, Mediterranean Sea and Black Sea.

Similar Eggcase: The larger Blonde Ray eggcase. The smaller and textured Starry Skate. And the Small-eyed Ray which has narrower upper horns and shorter lower horns.

Great Eggcase Hunt Records: Thornback Ray eggcases are commonly reported and have been submitted from the majority of the British coastline.