Angle down to shoot the first seaweed block at the level of Samus' knees. Take four tiny steps forward, firing a shot with forward momentum on each step, destroying the seaweed at the level of Samus' head, with the last shot continuing on to open the door. Do one more angle down shot to destroy the last seaweed block at Samus' knees. Then shinespark through the door.

Entrance condition:

{
  "comeInShinecharged": {}
}

Requires:

{
  "shineChargeFrames": 110
}
"canShinechargeMovementTricky"
{
  "shinespark": {
    "frames": 18
  }
}

Exit condition:

{
  "leaveWithSpark": {
    "position": "bottom"
  }
}

Unlocks doors:

{"types":["ammo"],"requires":["never"]}