英文あらすじ（Synopsis）：

Then, Chihaya felt a hand placed on her shoulder. There was Aya, her short trimmed hair flickering in the water like seaweed. Aya tries to take Chihaya above, but Chihaya fights feverishly - there was no way, she thought, she could make her way all the way back to the surface. Worried, Aya points at her mouth, exhales small bubbles, and then gestures towards the dark inner quarters of the ship down the corridor. In an inquiry, Chihaya points to her own mouth: is - is there air down here? and to this Aya replies with a confident nod. Aya turns around and begins to swim with the grace and speed of a maritime species. Chihaya clutches her teeth and follows suit.

　（十三、十四）
　千早は頭の中で秒数を数えていた。烹水所や医務室らしいところを過ぎて廊下を鍵の手に折れると、船員の居住区らしく同じようなドアがいくつか並んでいる。
　（二十一、二十二）
　綾は、その突き当たりの、半開きになった扉の間をするりと通り抜ける。千早も、出来るだけ身体を横に倒すようにして、その狭い隙間に身を通した。
　（三十三、三十四）
　「ううっ」
　千早は水の中で声を上げた。限界だった。ごぽごぽっと残りの空気を全部吐いてしまったが、それでも、半ば失神しながらじたばたと水を掻く。（もう、だめ）

Thirteen, fourteen....
After her jackrabbit start, Chihaya began counting in her head. Seeing Aya's paddling feet just before her, she swam past the ship's galley and sick bay, and a long row of doors which seemed like the mates' living quarters.
Twenty-one, twenty-two...
Now, Aya and Chihaya had reached the far end of the corridor. Aya slid her body through a door that was slightly ajar - and so did Chihaya, barely squeaking through.
Thirty-three, thirty-four...
"Aaaaarrgh," Chihaya uttered a suffocated scream, mouthing pints of seawater. She was totally beyond what she could do. She wavered her limbs frantically and belched out every bubble of air that was remaining in her lungs. "I-I can't."