Gentoo penguins have been known to make as many as 450 dives per day to forage for food. They can dive as deep as 200 metres (650 feet) and stay underwater up to seven minutes. Although they prefer to stay close to shore, gentoos have been spotted as far as 26 km (16 miles) out to sea. They are also the fastest-swimming penguins in the world, reaching speeds of up to 36 kph (22.4 mph).