I have heard that sand causes impactions when ingested and gets all caught in them also, but I'm not sure that's what I read on here, other than that very beautiful pictures I love nature shots
My tortoise Peach hates apples
Mario loves Peaches
0.0.2 redfoot
Lovely pictures, but I agree with the others. Sand causes impaction in the gut if it gets eaten by accident. The salt levels in the sand, sea water and even the plants growing by the sea are far too high for your tort as well.
Your tort is not a sea creature, nor is it a dog, it will be happier, healthier and less stressed left in its own enclosure while you go out to enjoy your day.