They also have short gill openings. Sandtiger sharks often feed cooperatively, which makes them socially unique among sharks. They are often found in groups of a few dozen, hovering in caves or near shipwrecks. Sandtiger sharks are a migratory species, common in inshore waters during the summer and moving southward or to deeper waters in winter. They are most active at night.
Females usually stay in localized areas, while males migrate more.
They are ovoviviparous. This species of shark is unique because of the intra-uterine cannibalism that occurs. Only one embryo per uterus survives. Size at birth is more than 3 feet. These young are born with sharp, functional teeth.