Many blacktip reef sharks in French Polynesia are commonly fed by tourists. But the low-quality diet is changing the sharks’ behavior and physiology.

Sand tiger sharks can grow up to 20 feet (6.1 meters) long, with an average length of 12 feet (3.7 meters). They can weigh up to 600 pounds (272.2 kilograms), but weigh around 240 pounds (108.9 ...

Ecologists see this type of diet overlap as a good thing ... When the researchers zeroed in on one species—the sand tiger shark—they found that it has moved up the food chain over time ...

OARAI, Ibaraki Prefecture--A sand tiger shark was born at the Aqua World Ibaraki Prefectural Oarai Aquarium here, the first successful breeding of the species in Japan. Only four other aquariums ...

From fish and crustaceans to sea snakes, sea birds, seals, dolphins, and even smaller sharks, this voracious hunter displays a remarkable adaptability in its diet. However even ... (Echeneis naucrates ...

Sand tiger sharks, also known as gray nurse sharks, have a deceivingly ferocious look. They are large-bodied and display a mouthful of sharp teeth that protrude in all directions, even when the ...