How many volumes does Mizu Wakusei Nendaiki have?

Mizu Wakusei Nendaiki has 7 volumes.

Is Mizu Wakusei Nendaiki completed?

As of now, Mizu Wakusei Nendaiki has finished.

Mizu Wakusei Nendaiki was published from July 26, 2006 to April 28, 2009.

Mizu Wakusei Nendaiki is a manga, originally from Japan.

In the Mizu Wakusei Nendaiki (Aqua Planet Chronicle) series:

Mizu Wakusei Nendaiki (Aqua Planet Chronicle)
Zoku Mizu Wakusei Nendaiki (Aqua Planet Chronicle After)
Kan Mizu Wakusei Nendaiki (Aqua Planet Chronicle Around)
Midori Mizu Wakusei Nendaiki (Aqua Planet Chronicle Jade)
Ao Mizu Wakusei Nendaiki (Aqua Planet Chronicle Blue)
Mizu Wakusei Nendaiki Getsujou (Runyan) (Aqua Planet Chronicle Final)
Mizu Wakusei Nendaiki Gekkan Sachisachi (Aqua Planet Chronicle Monthly Sachisachi)

Yokohama Kaidashi Kikou

Aqua

Aria

8-gatsu no Soda Sui

Sekai no Aikotoba wa Mizu