Kataa Flo Ko
From Tardis Wiki, the free Doctor Who reference
Kataa Flo Ko was one of the places the Doctor mentioned he would like to take his companion Donna Noble to, when he mistakenly thought she was leaving him. The planet was also said by the Doctor to have Diamond Coral Reefs, possibly making it in the same system as the planet Midnight. (The Sontaran Stratagem)
