Southern black racer (scientific name: "Coluber constrictor"), the racer is more likely to suffocate or crush its victim into the ground, rather than coiling around it in typical constrictor fashion. Man remains the greatest enemy of black racers. Many are killed on highways and others are intentionally killed out of fear. The white chin causes some people to kill this snake, believing that it is a cottonmouth – a venomous snake more commonly called a water moccasin. The venomous snake has a white lining inside of its mouth. Racers are nonvenomous and do not breed with cottonmouths. Natural enemies include such birds of
HMS Venomous the North Atlantic 180 nautical miles (333 km) west of Gibraltar. While she was hunting for "U-515", the submarine fired four torpedoes at 00:15 hours at "Hecla", which sighted and avoided two of them but was hit by the other two. While "Venomous" and "Marne" continued to hunt for "U-515", the submarine torpedoed "Hecla" three more times, at 01:28, 01:49, and 02:06 hours, after which "Hecla" quickly sank at with the loss of 279 lives. "Venomous" and "Marne" began to rescue "Hecla"s survivors, but "Marne" had pulled only 64 out of the water when "U-515" torpedoed her at 02:11 hours,