
DiscoverSpeciesSharks and rays
Grey reef shark
Carcharhinus amblyrhynchos
- Usual depth3–18 m
- Water temperature24–30 °C
- How commonCommon
Photo credit: (c) cello caruso-turiello, some rights reserved (CC BY) · CC BY · iNaturalist
About this species
The grey reef shark or gray reef shark is a species of requiem shark, in the family Carcharhinidae. One of the most common reef sharks in the Indo-Pacific, it is found as far east as Easter Island and as far west as South Africa. This species is most often seen in shallow water near the drop-offs of coral reefs. It has the typical "reef shark" shape, with a broad, round snout and large eyes. It can be distinguished from similar species by the plain or white-tipped first dorsal fin, the dark tips on the other fins, the broad, black rear margin on the tail fin, and the lack of a ridge between the dorsal fins. Most individuals are less than 1.88 m (6.2 ft) long.
Text from the Wikipedia article “Grey reef shark”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 2,461 records
- February: 2,382 records
- March: 2,994 records
- April: 2,971 records
- May: 2,717 records
- June: 2,572 records
- July: 2,565 records
- August: 2,600 records
- September: 2,615 records
- October: 2,744 records
- November: 2,361 records
- December: 2,540 records
Depth and water temperature
Depth
Mostly recorded at 3–18 m · Deepest record: 255 m
Water temperature
Recorded in surface water of 24–30 °C
Photos

(c) Debra Baker, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) norcalmc, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Debra Baker, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Daniel Eisenhauer, some rights reserved (CC BY) · CC BY · iNaturalist 
no rights reserved · CC0 1.0 · iNaturalist 
(c) Jay Paroline, some rights reserved (CC BY) · CC BY · iNaturalist 
(c) Logan Jones, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Grey reef shark, blacktail reef shark, Gray Reef Shark, grey reef shark, Grey Shark, Blacktail reef shark, Grey reef shark, shortnose blacktail
Names in 2 more languages
- French
- Dagsit, Requin Gris de récif, Requin gris de récif, Requin dagsit, Requin à queue noire
- Japanese
- Oguromejirozame, オグロメジロザメ
Other scientific names: Carcharhinus amblyrhinchos, Carcharhinus amblyrhynchus, Carcharhinus wheeleri, Carcharias amblyrhynchos, Carcharias nesiotes, Carcharinus amblyrhynchos, Carcharinus amblyrhynchus, Carcharinus amblyrhyncus, Galeolamna coongoola, Galeolamna fowleri, Galeolamna tufiensis
Similar species
Silvertip sharkCarcharhinus albimarginatus
Silky sharkCarcharhinus falciformis
Blacktip reef sharkCarcharhinus melanopterus
Spottail sharkCarcharhinus sorrah
Blackspot sharkCarcharhinus sealei
Indonesian WhalerCarcharhinus tjutjot
Sources and credits
Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).
- Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
- Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
- Conservation status as published by GBIF (IUCN Red List).
- 217,173 open-data records from 1856 to 2021.
- Species data updated October 26, 2026.
Log what you see on your next dive
The free DiveHive diver app keeps your logbook with every sighting and shows what lives at the site you dive next.