With blue speed, run and jump across the water, morphing and unmorphing (while holding an angle button) to gain temporary blue without a shinecharge.

Requires:

{"getBlueSpeed": {"usedTiles": 16, "openEnd": 1}},
"canChainTemporaryBlue"

Exit condition:

"leaveWithTemporaryBlue": {}

Unlocks doors:

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