How can horses swim

[MeltedLemonade]

Look at a horse and tell me that it has a sufficient body structure to be able to swim. It's legs are far too small to be able to push the water with enough force to be able to stay afloat with their huge size. Even humans struggle to swim and need to be taught.

Were horses born from the sea

[Lupa]

They can swim, whether or not they are good at it is up for debate. Sea horses probably do the best at it.