They wouldn't need to swim. They would be pushed/towed and/or pulling on a rope. Diving isn't like swimming- the hardest part of swimming is staying on the su

They wouldn't need to swim. They would be pushed/towed and/or pulling on a rope. Diving isn't like swimming- the hardest part of swimming is staying on the surface and being able to breath. When you're diving you're just floating there and you have air. Divers typically use fins for propulsion which is quite different than swimming.