Odontaspis

Odontaspis is a genus of sharks in the family Odontaspididae, commonly known as sand tiger sharks or ragged-toothed sharks. These sharks are characterized by their slender bodies, broad heads, and prominent, needle-like teeth that protrude from their jaws even when the mouth is closed. This distinctive dentition gives them their common name and is a key feature for identification.

The genus currently contains two recognized living species: Odontaspis ferox, the ragged-toothed shark or bull shark, and Odontaspis noroni, Noron's sand tiger shark. Historically, the genus has been subject to taxonomic debate, with several species previously assigned to Odontaspis now placed in other genera or considered synonyms. Odontaspis ferox is found in tropical and warm-temperate waters worldwide, typically inhabiting continental shelves and oceanic islands. Odontaspis noroni is a rarer species, with fewer recorded sightings.

These sharks are primarily nocturnal predators, feeding on a variety of bony fishes, cephalopods, and other smaller sharks. They are generally slow-moving and are often found near the seabed, though they can also be observed in mid-water. Despite their formidable appearance, sand tiger sharks are not considered aggressive towards humans unless provoked. They are ovoviviparous, meaning the eggs hatch inside the mother's body, and the young are born live. One notable aspect of their reproduction is uterine cannibalism, where the strongest embryo consumes its siblings before birth.