The sand does not impede Samus in G-Mode.

Entrance condition:

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

Requires:

"h_navigateUnderwater",
{"or": [
  "Gravity",
  "HiJump",
  "canSpringBallJumpMidAir",
  {"and": [
    "h_underwaterCrouchJumpDownGrab",
    "h_storedSpark",
    {"shinespark": {"frames": 6, "excessFrames": 5}}
  ]}
]}

Dev note: Only the last jump needs any items.