Description: Shaw & Nodder 1795 Size: up to 60cm, on the picture: 40cm The Coffin ray can deliver powerful electric shocks(50amp-1kw) with an electric organ located in each pectoral fin. This organ is used to shock crabs, worms and fishes, which make up the diet. Also known as Numbfish. Date: 16 February 2013, 18:03. Source: Coffin Ray-Hypnos monopterygius. Author: Sylke Rohrlach from Sydney. Camera location 33° 50′ 59.88″ S, 151° 16′ 37.26″ E: View all coordinates using: OpenStreetMap - Google Earth: -33.849966; 151.277017.