Porcupine Ray
Urogymnus asperrimus
The porcupine ray (Urogymnus asperrimus) is a rare species of stingray in the family Dasyatidae. 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. Wikipedia →
20–30% of wildlife watchers report a Porcupine Ray sighting in Ningaloo Marine Park, based on 16 days of visitor records from GBIF citizen-science data.
📅 Monthly Probability
🕐 When They’re Spotted
Sightings of Porcupine Ray are recorded here, but fewer than 5 of them carry a time of day in GBIF — sighting probability uses whole days, so it is unaffected. The hourly pattern needs timestamps we don't have yet.
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
| # | Park | Country | Probability |
|---|---|---|---|
| 1 | Ningaloo Marine Park | 🇦🇺 Australia |
More parks will be added in future updates.
Quick answers
What are the chances of seeing a Porcupine Ray in Ningaloo Marine Park?
About 28% of wildlife watchers report a Porcupine Ray sighting in Ningaloo Marine Park, based on 16 days of visitor records from GBIF citizen-science data.
When is the best time to see Porcupine Ray in Ningaloo Marine Park?
August has the highest sighting rate for Porcupine Ray in Ningaloo Marine Park in our monthly data.