Here's what we can say:
* Average Speed: Dolphins can swim at an average speed of 10-20 mph (16-32 kph).
* Short Bursts: They can reach speeds of 30 mph (48 kph) or more for short bursts.
* 100 Meters: With an average speed of 10-20 mph, a dolphin could swim 100 meters (328 feet) in 2-4 seconds.
Keep in mind that these are just estimates. Actual speed would depend on many factors.