Atlantic sharpnose shark

Rhizoprionodon terraenovae

Description

The Atlantic sharpnose shark has a long snout and labial folds around its mouth. The triangular smooth edged teeth are similar on both the upper and lower jaws. This shark can be brown, olive-gray or blue-gray turning to white on the underside. Adults may have some white spots and smaller individuals tend to have black edged dorsal and caudal fins.

Range

This small shark is more commonly found in the coastal waters of South Carolina, Florida and the Gulf of Mexico where it is a year round resident. Although its scientific name may suggest that it can be found off of Newfoundland, the Atlantic sharpnose has not been reported in those waters. Indeed, it is not a common shark anywhere in Canadian waters. Its most northerly distribution is in the Bay of Fundy and it is rare even in that area.

Habitat

The Atlantic sharpnose shark is found in coastal waters at depths of 12 meters (42 feet) or less during the summer months. During the winter this shark can be found at depths greater than 27 meters (90 feet).

Life history

The Atlantic sharpnose shark is a small shark that attains a maximum size of 1.2 meters (4 feet). Average size is about 95 cm.

Diet

This shark consumes shrimp, molluscs and small fishes.

Reproduction

Sexual maturity is reached when an individual is approximately 83 cm (33 in). The young are nourished within the female as development is viviparous. Litters of 4 to 7 pups are born in June in shallow waters or estuaries. The newborns are 22 to 35 cm (9 to 14 in) in length.

Interaction with People

The Atlantic sharpnose is a common nuisance to fishermen as it will take bait intended for other fish. It is a small shark and not considered dangerous to humans.

Distinguishing Characteristics

• May have black edged dorsal and caudal fin
• Long labial furrows around corners of mouth
• Nictitating membrane over eye