The Water Dragon using TsunamiBeam on the party.
TsunamiBeam (津波レーザー , Tsunami rēzā, lit. Tsunami Laser?) is a Blue Enemy Tech used by the Water Dragon in Chrono Cross. When activated, the Water Dragon will release a couple of water beams, which summon a tsunami water wave to engulf all her foes, inflicting mediocre damage in the process. This tech may also bring about the Flu status effect.
The Water Dragon will first open her mouth and arch her tail, whereupon the tips of her tail will release light beams to the ceiling. These light beams will then rain down in a horizontal line in front of the Water Dragon momentarily before disappearing. As they disappear, a tsunami wave will form, engulfing all foes present on-screen for a short period of time.
Tsunami is a Japanese transliterated word, which hereby refers to a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake. In this case, the Water Dragon summons a destructive wave with the intention of defeating her foes, and as such, the name is a befitting one.