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The sandbar shark, Carcharhinus plumbeus is a species of requiem shark and belongs to Carcharhinidae family. They are found in the Atlantic Ocean and the Indo-Pacific regions. It can be recognized easily as it has very high first dorsal fin. It is also called as the thick skin shark or brown shark.
Description & Behavior
These sandbar sharks belong to a group of large sharks that measure up to 2.5m in length and on an average, it measures up to 2 m in length. It weighs up to maximum weight of 118 kg. Generally, it can weigh between (45-90) kg. On an average, the male weigh up to 50 kg and female can weigh up to 68 kg. The sandbar shark is a stout shark, which has moderately long and round snout with high triangular saw-edged upper teeth. It can be of different colors like blue-gray, brown or bronze on the dorsal side and flanks. It has white color on the ventral side. The outer margin as well as the tips can be darker as compared to the rest of the body.
Habitat of Sandbar shark
These sandbar sharks can be found in subtropical water, where the temperature ranges between (23-27) degree Celsius. It can be found in the Western Atlantic from Southern Massachusetts, from USA to Southern Brazil. It is also found in the Gulf of Mexico, Cuba, Bahamas, South, and West Carribean. It is found from Portugal to Democratic Republic of the Congo in the Eastern Atlantic. They are also found in the Indo-Pacific range, which includes the Red Sea, Persian Gulf, East Africa to the Hawaiian Islands and Galapagos Islands. They are generally found in shore and offshore waters as well as in deep water. They are also commonly found in bays, river mouths and harbors. It avoids surface area and beach area.
Feeding behavior of Sandbar shark
The sandbar shark is a bottom-feeder. It feeds on bony fishes, rays, smaller sharks, gastropods, cephalopods, crabs and brine shrimp. They feed at daytime but become more active at nights.
Reproduction and Breeding
The embryo receives nourishment via a placental sac in the mother who bears the young ones. Males attain maturity between (1.3-1.80) m while females attain maturity between (55-70) cm. The mating occurs in the spring or early summer in the northern hemisphere. In the southern hemisphere, the mating occurs during the warm summer months between late October to January. The sandbar shark repeatedly bites female until she turns on her back and the male inserts both claspers into her cloaca. Once fertilization occurs, the gestation period ranges between (8-9) months.
Sandbar Shark Facts
- It is in the IUCN danger list of extinction
- It is considered to be harmless to human
- The reproductive rate is slow
- Highly in demand in market
Conservation of Sandbar Shark
These sandbar sharks are considered harmless to humans, as it does not like to go on beaches or on the surface of water. In addition, it likes to feed on smaller prey. These sharks are in great demand because of their number, size, meat, skin and liver. In addition, these species has a low reproductive rate and it is slow to mature. Thus, it will remain only in books if the Government does not take proper preventive and preservative measures soon.