Undulate Ray Identification Guide

Key identification features

• Rounded to slightly angular disc with a short, blunt snout
• Sandy tan to yellowish-brown upperside crossed by several bold, dark wavy or undulating bands and lines, sometimes broken into blotches
• Small pale spots often scattered within the darker bands
• Sparse small thorns along the midline of the back and tail, far fewer than on a thornback ray
• Pale, unmarked underside

Common look-alikes

• Thornback ray has a plainer, blotchier pattern without the strong wavy banding and carries far more prominent large thorns
• Small-eyed ray shows a more uniform grey-brown back with small, less contrasting markings rather than bold dark bands
• Cuckoo skate has distinct large yellow-ringed eyespots that the undulate ray lacks

Where you'll see one

Found over sandy and muddy bottoms in shallow to moderate depths along the Eastern Atlantic coast from the English Channel south to West Africa, and throughout much of the Mediterranean. It favors relatively shallow inshore waters, making its striking wavy-banded pattern one of the more distinctive and recognizable features among European skates.