What We Do Citizen Science Great Eggcase Hunt British Isles & NW Europe BLONDE RAY (Raja brachyura) Size:Maximum Eggcase Length: ~21cm (ranges from 12–25cm)Eggcase Length (without horns): ~10cm (ranges from 8-13cm)Maximum Eggcase Width (with keels): ~6.5cm (ranges from 3–8.5cm)Range: In the Northeast Atlantic you can find the Blonde Ray from Norway down to Morocco, and in the western Mediterranean Sea. It has a patchy distribution in the North Sea. Similar Eggcase: Thornback Ray eggcases are a similar shape. But Blonde Ray eggcases are much larger with longer upper horns. Great Eggcase Hunt Records: Verified records are mainly from southwest England, south Wales, and the Channel Islands, with scattered finds reported from the rest of the British coastline.