Blacktip sharks (Carcharhinus limbatus) are medium-sized requiem sharks found in warm coastal waters. According to NOAA Fisheries, they are gray to gray-brown with a white belly and a pale band along each side, and their pectoral, dorsal, and tail fins have black tips while the anal fin stays white. They grow quickly to about 6 feet (roughly 2 meters) long, and the oldest one on record was 15.5 years old.
They often travel in large schools and are known for leaping and spinning out of the water while feeding on schools of small fish, which is why they are often confused with spinner sharks. Females give birth to about three pups per litter after an 11 to 12 month pregnancy. In the United States, Atlantic blacktip sharks are a managed commercial and recreational species found from New England through the Southeast and the Gulf.
Source: NOAA Fisheries: Atlantic Blacktip Shark
Image: Blacktip shark by Albert kok, CC BY-SA 4.0, via Wikimedia Commons.