How much is the Average speed of seals in water?

Seals can swim at an average speed of about 3 to 6 miles per hour (4.8 to 9.7 kilometers per hour) when cruising. However, they can reach speeds of up to 15 miles per hour (24 kilometers per hour) in short bursts when they are startled or pursuing prey. Their swimming capabilities vary among different species, with some being more agile than others.