Lure the Geemers up out of the water. It may be helpful to freeze them on the ascent to prevent them from separating and moving horizontally. At the top, position a Gamet flush with the central runway. Positioning is much easier with Morph; simply morph on the runway before they start separating. Freeze the Gamet before it begins moving horizontally, and it will be able to turn to the right. Use it as a frozen platform to cross both bodies of water. Lure the Gamet to the right and freeze it while there is a half-tile gap between it and the runway in order to extend it as much as possible.

Requires:

"h_canNavigateUnderwater"
"canTrickyJump"
{
  "or": [
    "h_canTrickyFrozenEnemyRunway",
    {
      "and": [
        "h_canFrozenEnemyRunway",
        "Morph"
      ]
    }
  ]
}
{
  "or": [
    {
      "ammo": {
        "type": "Super",
        "count": 1
      }
    },
    {
      "obstaclesCleared": [
        "A"
      ]
    }
  ]
}

Exit condition:

{
  "leaveWithRunway": {
    "length": 9,
    "openEnd": 0
  }
}

Unlocks doors:

{"types":["ammo"],"requires":[]}