Walks over sand on separate finger-like pectoral rays and spreads two huge blue-spotted fins when alarmed. The fins are a display, not a means of flight.
To about 50 cm, common at 38. Unmistakable: enormous fan-like pectoral fins with the front six rays separated off as a small lobe, an armoured blunt head, and blue-spotted pectoral membranes when the fins are spread. Nothing in the region resembles it.
It walks over the bottom on the free pectoral rays, using them to probe for food, and flares the wings when disturbed. The spread is a display, not flight, and the name is a misnomer.
One to a hundred metres on sand, mud and rock set in sand. It is not venomous — FishBase records neither a glandular groove nor a venom gland — which is worth saying because the armoured head suggests otherwise.
Ratings are per location: 1 means found on most dives that look for it, 5 means a handful of records. Where enough dives have been logged the figure is calculated from them; otherwise it is an editorial estimate, and says so. We publish habitat and destination, not the dive site.