Ⓢ You can Special Summon this card (from hand) by discarding 1 other WATER.
① When this card is Summoned:
You can send 1 Level 2 or lower WATER Aqua from your Deck or face-up-field to the GY.
② Once per turn: You can return 1 monster you control to the hand;
this turn, you can Normal Summon 1 "Frog" monster (except “Swap Frog” or “Frog the Jam”),
in addition to your Normal Summon/Set.
● Discarding 1 WATER monster for this card’s Ⓢ is a cost. This does not start a chain.
● Returning a monster to the hand with the ② effect is a cost.
● You can only use the ② effect once per turn while Swap is face-up.
(If Swap leaves the field, and is then resummoned that turn, it can be activated again).
● After using your Additional Normal Summon, you may still activate this card’s ② effect (however, you may only gain 1 Additional Summon per turn, even if it resolved more than once).
(You may use the additional “frog” Summon before your normal Normal Summon).