Buzzsaw Shark

Fish/Effect

You can target 1 WATER monster you control; Special Summon from your Deck in Defense Position, 1 Fish monster with the same Level as that monster, but with a different name, and if you do, it cannot activate its effects this turn, also, you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Xyz Monsters. You can only use this effect of "Buzzsaw Shark" once per turn. If this card is used for the Xyz Summon of a WATER monster, it can be treated as a Level 3 or 5 monster.

Ice Knight

Aqua/Effect

Gains 400 ATK for each Aqua monster you control. Once per turn: You can activate this effect; you can Normal Summon 1 WATER monster during your Main Phase this turn, in addition to your Normal Summon/Set (you can only gain this effect once per turn), also you cannot Normal or Special Summon monsters for the rest of this turn, except WATER monsters.

Lantern Shark

Fish/Effect

If this card is Normal or Special Summoned: You can activate this effect; Special Summon 1 Level 3, 4, or 5 WATER monster from your hand in Defense Position, except "Lantern Shark", also, you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Xyz Monsters. You can only use this effect of "Lantern Shark" once per turn. If this card is used for the Xyz Summon of a WATER monster, it can be treated as a Level 3 or 5 monster.

Left-Hand Shark

Fish/Effect

If this card is Special Summoned from the GY: This card's Level becomes 4. You can only use each of the following effects of "Left-Hand Shark" once per turn. If you control "Right-Hand Shark", and this card is in your hand or GY: You can Special Summon this card, but banish it when it leaves the field. An Xyz Monster that was Summoned using only WATER monsters as material, including this card on the field, gains this effect.
• This card cannot be destroyed by card effects.

Right-Hand Shark

Fish/Effect

When this card is Normal Summoned: You can add 1 "Left-Hand Shark" from your Deck to your hand. If this card is in your GY and you control no monsters: You can Special Summon this card, but banish it when it leaves the field. An Xyz Monster that was Summoned using only WATER monsters as material, including this card on the field, gains this effect.
• This card cannot be destroyed by battle.
You can only use each effect of "Right-Hand Shark" once per turn.

Rock Scales

Fish/Effect

If this card is Special Summoned: You can target 1 other face-up monster on the field; equip that face-up monster to this card. At the start of the Damage Step, if this card battles an opponent's monster with the same Type and Attribute as the Monster Card equipped by this card's effect: You can destroy that opponent's monster. You can only use each effect of "Rock Scales" once per turn.

Silent Sea Nettle

Aqua/Effect

If you control a WATER monster: You can Special Summon this card from your hand. You cannot Special Summon monsters, except WATER monsters, the turn you activate this effect. You can banish this card from your GY, then target up to 3 WATER monsters in your GY; shuffle them into the Deck. You can only use each effect of "Silent Sea Nettle" once per turn.

Ice Mirror

Target 1 Level 3 or lower WATER monster you control; Special Summon 1 monster with the same name from your Deck, but you cannot Special Summon from the Extra Deck while you control that face-up Special Summoned monster.

Torpedo Takedown

Target 1 WATER Xyz Monster you control; detach 1 material from it, inflict 400 damage to your opponent for each card in your hand, and if you do, that monster gains ATK equal to the damage inflicted, until the end of this turn. You can banish this card and 1 WATER Xyz Monster from your GY; draw 2 cards. You can only use 1 "Torpedo Takedown" effect per turn, and only once that turn.

White Mirror

Target 1 Level 4 or lower Fish monster in your GY; Special Summon it, then you can add 1 monster from your Deck to your hand with the same original name as that Special Summoned monster. You can only activate "White Mirror" once per turn.

Whitefish Salvage

You can target 1 Fish monster in your GY; add it to your hand. You can only use this effect of "Whitefish Salvage" once per turn. If this card in your possession is destroyed by an opponent's card effect and sent to your GY: Take 1 Fish monster from your Deck, and either add it to your hand or Special Summon it.

Ice Barrier

When an attack is declared involving your opponent's monster: Change that opponent's monster's ATK to 0, negate its effects, also it cannot change its battle position. You can banish this card from your GY; send 1 Level 5 or higher WATER monster from your Deck to the GY, then, you can add 1 WATER monster from your GY to your hand, also, until the end of your next turn after this effect resolves, you cannot Special Summon monsters, except WATER monsters. You can only use this effect of "Ice Barrier" once per turn.

The Ice-Bound God

If 2 or more WATER monsters are on the field: Target 1 face-up monster your opponent controls; that face-up monster cannot attack, also its effects are negated. If a Level 5 or higher WATER monster(s) is Normal or Special Summoned to your field, while this card is in your GY (except during the Damage Step): You can Set this card, but banish it when it leaves the field. You can only use this effect of "The Ice-Bound God" once per turn.

Xyz Revive Splash

Target 1 Rank 4 or lower Xyz Monster in your GY; Special Summon it. Its Attribute becomes WATER. You can banish this card from your GY, then target 1 WATER Xyz Monster you control; Special Summon from your Extra Deck, 1 WATER Xyz Monster that is 1 Rank higher than that monster you control, by using it as material. (This is treated as an Xyz Summon. Transfer its materials to the Summoned monster.) You can only use 1 "Xyz Revive Splash" effect per turn, and only once that turn.

Number 4: Stealth Kragen

Aqua/Xyz/Effect

2 Level 4 WATER monsters
All face-up monsters on the field become WATER. Once per turn, during the Main Phase (Quick Effect): You can destroy 1 WATER monster your opponent controls, and if you do, inflict damage to your opponent equal to half the ATK it had on the field. If this Xyz Summoned card is destroyed: You can Special Summon "Stealth Kragen Spawn(s)" from your Extra Deck, up to the number of materials this card had, then you can attach up to 1 WATER monster from your GY to each of those Special Summoned monsters as material.

Stealth Kragen Spawn

Aqua/Xyz/Effect

2 Level 4 WATER monsters
Once per turn, during the Main Phase (Quick Effect): You can destroy 1 WATER monster your opponent controls. If this card, Special Summoned by the effect of a "Number" Xyz Monster, is destroyed: You can Special Summon other "Stealth Kragen" monsters from your GY, up to the number of materials this card had, then you can attach up to 1 WATER monster from your GY to each of those Special Summoned monsters as material.

Valiant Shark Lancer

Beast-Warrior/Xyz/Effect

2 Level 5 monsters
You can target 1 monster your opponent controls; detach 1 material from an Xyz Monster you control, and if you do, destroy that monster. This is a Quick Effect if you control another WATER Xyz Monster. If another WATER Xyz Monster(s) you control is destroyed by battle or card effect while you control this monster: You can take 1 Spell from your Deck and place it on top of your Deck. You can only use each effect of "Valiant Shark Lancer" once per turn.