Tadakusa and Yanna visit Sun Beach Nikkogawa, the pool known as the Waikiki Beach of Nagoya. There they find Yatogame completely at the mercy of her cousin Shiharu. For some reason, Shiharu hits it off instantly with Dobe, who just happened to be there as well... With Nanaho and even the teachers at the pool, the atmosphere is peaceful and friendly... but are they forgetting someone?
That seems like all the more 
reason to use seawater.
يبدو ذلك سبباً أكبر لاستعمال ماء البحر
Dann hätten sie erst recht
Meereswasser nehmen sollen.
Pues con mayor razón
deberían tener agua de mar…
Pues con mayor razón
debería tener agua de mar…
Quitte à reproduire Waikiki,
il aurait fallu de l’eau de mer.
Sembra un motivo in più per usare l'acqua di mare...
Parece mais um motivo 
para usar água do mar...
Тогда им бы тем более 
использовать морскую воду.