① You can discard 3 other WATER monsters to the GY; Special Summon this card from your hand.
② If you do: You can target 1 "Abyss-" Spell/Trap in your GY; add that target to your hand.
② You can Tribute 1 other Attack Position "Mermail" monster; send 1 random card from your opponent's hand to the GY.
(You can only use this effect of "Mermail Abyssleed" once per turn).
● If "Dimensional Fissure" is applying, this card's ① cannot be activated.
● If you discard an "Atlantean" monster to Summon this card, that "Atlantean" monster's effect must be Chain Link 1, as it was sent to the GY before this card was Summoned.
Afterwards, this card's effect to add a card from your GY to your hand will be Chain Link 2.