In order to procure water, the girls explore the island. Homare and Asuka find a dry stream bed. In order to get water from the dirt they dig up there they'll have to...!?
Meanwhile, left behind on the beach, Shion and Mutsu, both faint from dehydration, make a certain promise...
Any green or brown sea weed is edible.
كلّ الطحالب البحرية البُنية والخضراء قابلة للأكل
Grüner und brauner
Seetang ist essbar.
Las algas verdes y marrones
son comestibles.
Las algas verdes y marrones
son comestibles.
Qualsiasi alga verde o bruna è commestibile.
Qualquer alga verde ou
marrom é comestível.
Все зелёные и коричневые 
водоросли съедобны.