The sand does not impede Samus in G-Mode.

Entrance condition:

{
  "comeInWithGMode": {
    "mode": "any",
    "morphed": false
  },
  "comesThroughToilet": "any"
}

Requires:

"h_canNavigateUnderwater"
{
  "or": [
    "Gravity",
    "HiJump",
    "canSpringBallJumpMidAir"
  ]
}