From TARDIS Index File, the free Doctor Who reference.

Navarino
Appearances:	DW: Delta and the Bannermen NA: Return of the Living Dad

The Navarinos were a race of barely humanoid aliens.

Though slightly shorter then humans in size, Navarinos appeared more like giant starfish with five appendages covered in suckers. Navarinos required advanced disguises in order to pass themselves off as humans. Navarinos also had high metabolisms, easily overheating and becoming exhausted after short periods of activity. Navarinos spoke in a warbling voice, but they could speak Human languages.

A group of Navarinos attempted to go to Disneyworld with the Nostalgia Tours operation, but they accidentally went off course and landed in Wales instead; this group was later killed by a team of Bannermen. (DW: Delta and the Bannermen)