There are few mammals on Earth (at least large ones) that cannot swim. The ability to swim is a natural gift, because when thrown into the water, animals instinctively wave their limbs and swim. Even huge elephants can swim, but for some reason no one has seen giraffes swimming. Maybe that's why it is believed that giraffes can't swim.

Two researchers, Dr. Donald Henderson from Canada and Dr. Darren Nash from the UK, decided to look into this question. True, their study was more of a theoretical nature, and no giraffe was injured during it. Interestingly, this unusual study was inspired by a friendly dispute with colleagues, who stubbornly proved that with such a ridiculous body structure, such as a giraffe, to swim just impossible.
Scientists created a digital model of the giraffe and simulated its behavior in computer water. The software giraffe took into account many parameters - size, weight, biomechanics and even habits. As a result of the simulation, the scientists concluded that when immersed in water, the longer front legs shift the center of gravity and pull the entire front of the giraffe's torso down. The neck is pulled horizontally and the giraffe is forced to keep its head above water in an uncomfortable position.
That is, theoretically, a giraffe can swim by shuffling its legs and moving in the water, but it will most likely be short-lived, because of the uncomfortable position of its body. Besides, a giraffe can swim if a body of water is not less than 3 meters deep; it will simply wade through a shallower depth.