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BiologyLike other members of this family, the Pacific angel shark spends its days lying partially buried in sand or mud, snapping up its head and protruding its jaws at a surprising speed to ambush prey, such as bottom-dwelling fishes and squids. Whilst it does not pose a great danger to humans, its habit of lurching out to grab prey with its powerful jaws and needle-sharp teeth, can also be employed if touched or provoked, inflicting a serious bite on the diver (2). The Pacific angel shark becomes active at night, although does not swim long distances, when it will forage under the cover of darkness, thus still retaining the advantage of ambushing prey (4). The Pacific angel shark is an ovoviviparous fish; the embryos develop inside eggs that remain within the mother's body for nine to ten months until they hatch. Females produce litters of six to ten pups, of which only 20 percent are likely to survive to reach maturity at 10 to 13 years old (4).