Carcharias
Carcharias is a genus of requiem sharks in the family Carcharhinidae. The genus contains four species, two of which are considered endangered. The genus has a widespread distribution in tropical and subtropical waters worldwide, including the Atlantic, Pacific, and Indian Oceans. They are generally coastal species, although some species can be found in deeper waters.
Common Names
Sharks in the genus Carcharias are commonly known as "sand tiger sharks" or "grey nurse sharks".
Characteristics
Carcharias sharks are characterized by their robust bodies, pointed snouts, and large, powerful jaws. They have a single dorsal fin positioned on the back and a pair of small pectoral fins. The coloration of these sharks can vary between grey, brown, or even a reddish hue. The maximum size of the sharks can vary by species, but all are considered large, with the largest, the sand tiger shark (Carcharias taurus) reaching up to 3.3 meters (11 feet) in length.
Environments
Carcharias sharks inhabit a wide range of marine environments, from shallow coastal waters to deeper reefs. They are generally found near the bottom and are often seen resting on the seafloor. Their diet primarily consists of bony fish, other sharks, and rays.
Species
The genus Carcharias includes four species:
- Carcharias taurus (Sand tiger shark, grey nurse shark)
- Carcharias tricuspidatus (Whitecheek sand tiger shark)
- Carcharias melanopterus (Blackfin sand tiger shark)
- Carcharias falciformis (Sicklefin sand tiger shark)
References
For further information, you can consult the following sources: