Kyameron

Kyamerons are enemies from A Link to the Past. They are found in the Swamp Palace. Kyamerons are bubble-like enemies that form in shallow water and once ready, bounce around the room until they either dissipate or run into Link causing damage. Kyamerons cannot be defeated: upon impact with a sword or another weapon, they dissipate only to re-form themselves shortly thereafter. Therefore, it is easier to just avoid them.

In the additional Palace of the Four Sword dungeon for the Game Boy Advance version of A Link to the Past, after all the Bari that surround him have been destroyed, the Orange Arrghus boss is able to summon swarms of Kyameron.