Porcupine ray

Early pictures of a porcupine ray by Nelson Annandale.

Distinctive traits of the porcupine ray include its thick, rounded shape, and dorsal covering of sharp thorns.

The porcupine ray (Urogymnus asperrimus) is a rare species of stingray in the family Dasyatidae and the only member of its genus. This bottom-dweller is found throughout the tropical Indo-Pacific, as well as off West Africa. It favors sand, coral rubble, and seagrass habitats in inshore waters to a depth of 30 m (100 ft). A large and heavy-bodied species reaching 1.2–1.5 m (3.9–4.9 ft) in width, the porcupine ray has a nearly circular, plain-colored pectoral fin disc and a thin tail without any fin folds. Uniquely within its family, it lacks a venomous stinging spine. However, an adult ray can still defend itself ably with the many large, sharp thorns found over its disc and tail.

单词	Urogymnus africanus
释义	Urogymnus africanus 英语百科 Porcupine ray The porcupine ray (Urogymnus asperrimus) is a rare species of stingray in the family Dasyatidae and the only member of its genus. This bottom-dweller is found throughout the tropical Indo-Pacific, as well as off West Africa. It favors sand, coral rubble, and seagrass habitats in inshore waters to a depth of 30 m (100 ft). A large and heavy-bodied species reaching 1.2–1.5 m (3.9–4.9 ft) in width, the porcupine ray has a nearly circular, plain-colored pectoral fin disc and a thin tail without any fin folds. Uniquely within its family, it lacks a venomous stinging spine. However, an adult ray can still defend itself ably with the many large, sharp thorns found over its disc and tail.
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Urogymnus africanus

Porcupine ray