Sand in the house is the only problem; however, a thorough brush prior to coming inside cleans away most of the sand. And who cares about a bit of sand anyway?
After Major has been swimming and is dry, I love to smell his fur: a clean salty odour, with just a hint of seaweed.People living on Phillip Island tell of seeing the occasional wallaby (and once even a fox) swimming in the sea. This seems incredibly strange behaviour. Perhaps they too are using the salt water to protect themselves against external parasites?