There's a beetle that can swim with a speed of 2 meters per second - Apparently.
The Giant Water Bug (Belostoma bettanum) can hold its breath underwater for up to 2 hours, and swim at a remarkable speed of 2 meters per second. Found in the tropical waters of South America, this insect's ability to survive underwater is due to its unique oxygen-storing abilities, allowing it to forage for food and evade predators. This remarkable adaptation has been observed and documented by entomologists and biologists, who have studied the insect's remarkable physiology.