Use the slow global crab and Skulteras to get up. The last part, just below the item is the hardest. Get onto the global crab on the right wall. Either freeze the Skultera close to the wall and wall jump between them. or, a harder option without wall jumps is to refreeze the crab again, higher on the wall, while being careful not to clip through it. Freeze the Skultera at the left, near its minimum and jump to it, then the solid ground. Note that the fish will be pushed down slightly over time because of the sloped tiles, but it will be at its minimum by the time the global crab has arrived.

Requires:

{
  "notable": "Crab Climb with Only Ice"
}
"canSuitlessMaridia"
"canCrazyCrabClimb"
"canBeVeryPatient"
{
  "or": [
    "canSunkenTileWideWallClimb",
    "canTrickyJump"
  ]
}

Wait a long time for the slow global crab. Freeze it when it comes around on the left, one tile above the bottom slope. Freeze the fish, get on the frozen crab, and wall jump between the fish and the wall and the wall. Wall jump towards the fish to gain height faster.

Requires:

{
  "notable": "Crab Climb with Only Ice"
}
"canSuitlessMaridia"
"canCrazyCrabClimb"
"canSunkenTileWideWallClimb"
"canBeVeryPatient"
"canMidairWiggle"
{
  "obstaclesNotCleared": [
    "A"
  ]
}

Be sure not to lure the first crab on the right wall until the slow global crab is near. Freeze the crab coming down as a platform to stand on to jump onto the frozen global crab on the right. Near the end, use the global crab to get onto the top left corner of the room, then jump towards the walkway leading to the door.

Requires:

{
  "notable": "Crab Climb with Only Ice"
}
"canBeExtremelyPatient"
"canSuitlessMaridia"
"canCrazyCrabClimb"
"canTrickyJump"
{
  "obstaclesNotCleared": [
    "A"
  ]
}