Porcupine Ray (species: Urogymnus asperrimus) in Lizard Island Field Guide (Lizard Island Field Guide)
Urogymnus asperrimus
Porcupine Ray

©Vanessa Messmer: Porcupine Ray at Lizard Island.

©Vanessa Messmer: Porcupine Ray feeding at Lizard Island.

©Vanessa Messmer: Closeup of disc behind spiracles showing thorns on Porcupine Ray at Lizard Island
Kingdom Animalia
Phylum Chordata
Class Elasmobranchii
Order Myliobatiformes
Family Dasyatidae
Genus Urogymnus
Species Urogymnus asperrimus



Distinguishing features

A large ray with a thick, almost circular body covered with small sharp thorns on the upper surface. Tail is thick and round in cross-section at the base, tapers rapidly, and does not have a stinging spine.


  • Up to 120 cm (Disc width)

Depth range

  • Depth range data is not yet available.



©Atlas of Living Australia: Australian distribution

Local abundance

  • Lizard Island: Seen occasionally in sand near the bases of reefs.

Web resources


  • Last, P.R. and J.D. Stevens (2009). Sharks and Rays of Australia.: 2nd Edition CSIRO Publishing, Australia.