Double Fin Shark

Regarding "When this card is Normal Summoned: You can target 1 Level 3 or 4 Fish-Type WATER monster in your Graveyard; Special Summon it in face-up Defense Position. Its effects are negated. You cannot Special Summon monsters, except WATER monsters, the turn you activate this effect": - This is a Trigger Effect that can be activated in the Monster Zone. - You can activate this effect by targeting 1 Level 3 Fish-Type WATER monster in your Graveyard, or 1 Level 4 Fish-Type WATER monster in your Graveyard. - You cannot activate this effect if you have already Special Summoned a monster other than a WATER monster that turn. Furthermore, you cannot Special Summon monsters other than WATER monsters for the rest of the turn after activating this effect. - Once this effect is activated, you cannot Special Summon monsters other than WATER monsters for the rest of the turn (regardless of whether the effect resolves successfully). However, if the activation of this effect is negated, you are no longer restricted from Special Summoning monsters other than WATER monsters.