Galactica Tsunami

Galactica Tsunami is a water-based technique belonging to Sailor Aluminum Siren. It appears throughout the manga, the 1990s anime, Crystal, and the musicals, though the Crystal retelling relabels it Galactica Wave. Depending on the medium she channels it through her hair and the Galactica Bracelets, or in the anime through nothing more than bottled drinks.

In the manga, the strike lengthens Siren's hair and follows up with a burst of energy. Her extended hair snares Eternal Sailor Mercury and Eternal Sailor Jupiter, brushes aside Sailor Uranus's Space Turbulence, and plucks the Mercury Crystal and Jupiter Crystal from the pair, cutting off Sailor Moon's Starlight Honeymoon Therapy Kiss. The Crystal version dresses it up further, summoning swirling jellyfish-laden water that coils around a target as an extension of her hair; she then channels energy down the strands, which proves fatal to both Mercury and Jupiter. The 90s anime plays it for comedy instead, with an enraged Siren simply flinging drink bottles at the guardians.

Sailor Aluminum Siren is the lone caster in every incarnation. In the manga her opening assault on Usagi and the Sailor Starlights is turned back by Mercury and Jupiter before she captures them. During the anime scene the guardians swat away her thrown bottles with their heaviest techniques: Sailor Venus with Venus Love and Beauty Shock, Sailor Mercury with Mercury Aqua Rhapsody, Sailor Mars with Mars Flame Sniper, and Sailor Jupiter with Jupiter Oak Evolution. On stage the move first shows in Kakyuu-Ouhi Kourin and later in Le Mouvement Final, where she floods the arena during her clash with the Outer guardians.