Special Summon 1 Level 4 or lower Fish, Sea Serpent, or Aqua monster from your hand or GY, but you cannot Special Summon from the Extra Deck, except Xyz Monsters, while you control that face-up monster. If your opponent controls an Attack Position monster: You can banish this card from your GY, then target 1 Fish, Sea Serpent, or Aqua monster you control; it gains 1000 ATK until the end of this turn. You can only use each effect of "Aqua Jet Surface" once per turn.