The Kah Mael Shrine is located on Tingle Island, which is off the coast to the east of the Akkala Tower. The entrance to the shrine is blocked by a large slab. You can either use your stasis rune to propel the slab away or use an Octorok Balloon to lift the slab out of the way.
- Head to the left side of the scales and use your bow and arrow to shoot the ropes holding up the wooden platform holding a metal cube. This will cause it to fall and propel you into the air.
- Paraglide to the platform and open the treasure chest containing a diamond.
- Head to the altar and collect your spirit orb.