Kerun Za
From Tardis Wiki, the free Doctor Who reference
Kerun Za was a quiet planet in the 29th Galaxy which had purple seas. The Tenth Doctor and Lewis deposited Sea-Rah on Kerun Za so that he could live there in peace without disturbing anyone. (COMIC: Sea-Rah)
The Tenth Doctor and Heather McCrimmon brought the Spaeron to Kerun Za to live with Sea-Rah in its oceans. (COMIC: The Aquarius Condition)