Juvenile Frilled Sharks Are Born Fully Formed and Ready to Hunt

Newborns enter crushing darkness already equipped with rows of teeth.

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Litter sizes are relatively small compared to many shallow-water shark species.

Frilled sharks give birth to live young that emerge with functional dentition and developed bodies. Because they inhabit extreme depths from birth, juveniles must be immediately capable of independent survival.

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Unlike many fish that release thousands of vulnerable eggs, the frilled shark invests years into developing fewer, well-formed offspring. Each juvenile begins life in an environment lethal to most surface organisms.

This strategy reflects the brutal efficiency of deep-sea survival: there is no nursery, no protective reef, and no gradual acclimatization. From the moment of birth, the abyss is home.

Source

Natural History Museum

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