Which shark holds the record for deepest recorded depth?

The Portuguese dogfish holds the record for the deepest recorded depth among sharks. It has been reported at 3,675 metres, placing it on the abyssal plain far below the continental slope.

This small sleeper shark usually lives close to the seafloor and is most common between roughly 400 and 2,000 metres. Its global range is patchy but includes the Atlantic, Mediterranean, Indian Ocean, and parts of the Pacific. In the deep Mediterranean, it can be especially abundant below 1,500 metres.

The species is adapted to darkness and extreme pressure. Its large eyes, reflective tissue, and sensitive visual system help it detect movement and faint bioluminescence from deep-sea prey. It eats fish, squid, other sharks, invertebrates, and carrion. A common mix-up is confusing the deepest-living shark with the deepest-diving shark: the quiz refers to the greatest recorded habitat depth for a shark species.