Depth that deep diving sharks can reach is between 1,500 meters (5,000 feet) and 1800 meters (6000 feet).
The Frilled shark is a very unusual looking eel-like fish that spends most of its time at depths of 50–200 m (160–660 ft), but it has been caught as deep as 1,570 m (5,150 ft). This living fossil, dubbed so because of how old the species is, can reach up to 2 m (6.6 ft) in length.
Another deep diver is the so-called Bluntnose sixgill shark, with a slightly more conventional look. These sharks, commonly referred to as cow sharks, can reach lengths of 4.9 m (16 ft), and mostly feed on mollusks, crustaceans, and hagfish. Most sharks today have 5 gill slits, unlike the aptly named six gills shark, which makes this species older than most sharks, but still younger than the Frilled shark. These deep diving sharks can typically be found at depths greater than 90 m (300 ft), but in some cases sixgills have been recorded as deep as 6,000 feet (over 1,800 meters). These sharks tend to drift up while they’re sleeping, so they can be found at shallow waters at times, but extremely rarely.