Swimming Duel

A Poker Duel (スウィミング・デュエル Suwimingu Dyueru) is a style of Action Duel that happens in a beach that is formed by the "Swimming Battlefield" Action Field Spell Cards.

Before the Duel, the Duelists select their swimsuit, while both the and the cards in both player's  and  are adapted so as to be waterproof, as, in most of the time, the Duel Disk is underwater. During the Duel, the duelists swim in order to find the "Swimming Hint" Action Cards which help them with their strategies, but they must be aware of seaweeds. If a duelist's foot touches a seaweed, they lose 100 LP (note that it loses 100 LP, not takes 100 damage). Duelists cannot swim while they Summon a monster(s), while returning a card from their Graveyard or while banished to the hand, or while adding a card from their Deck to their hand, but they may swim while declaring an attack or during their opponent's turn, provided that they didn't Summon a monster, returning a card from the Graveyard or banished to the hand or adding a card from their Deck to the hand, which is actually prohibited.

Notable practitioners of Swimming Duels are Emily Cook and Ariel.

Trivia

 * The names of the "Swimming Battlefield" Action Field Spell Cards are based off different beaches that exist nearby LHK's hometown.