It has large feet which help it not to fall into the soft sand.

它的脚很大，这有助于它不掉到柔软的沙子里。

youdao

It's hard to walk on the soft sand.

沙土地暄，不好走。

《新英汉大辞典》

Yeah. We can enjoy the sea breeze and the soft sand.

对啊，我们能吹吹海风，还能踩在软软的沙子上。

youdao

They got about 20 or 30 meters, heading up the soft sand to the beach road.

CNN: Survivor's tale: This is surreal

Bartholomew said he also spent countless hours sprinting on soft sand under the direction of his former Grenadian coach Neville Glean.

WSJ: Menu

Only one place on Earth holds big, beautiful T. rex-like dinosaurs in relatively soft sand, in a vast, remote landscape that all but insures privacy.

NEWYORKER: Bones of Contention