Entrance condition:

"comeInWithGrappleTeleport": {
  "blockPositions": [[5, 3], [7, 2]]
}

Exit condition:

"leaveNormally": {}

Dev note: FIXME: Staying in the room is possible but may require complicated semi-blind movement: the seaweed can be broken with grapple shots, and visibility of Samus (but not the terrain) can be gained by fixing the camera; time is limited as the Baby will still grab Samus after the cutscene completes.