Haruka and the other club members decide to hold a training camp to prepare for prefectural.  Each member follows his own regimen.  However, Rei is unhappy about falling behind and heads back into the ocean at night to practice.
You may know the concepts perfectly,
Du magst die Theorien perfekt beherrschen,
Aunque te hayas aprendido a la perfección 
la teoría, el mar es peligroso.
Aunque te hayas aprendido 
la teoría, el mar es peligroso.
Même si tu maîtrises la théorie,
Per quanto tu sappia 
la teoria alla perfezione,
Você pode ter decorado os conceitos,
Может, понятия ты знаешь идеально,